Here are the verses with “σαββασ” in it. The word is just part of the whole word so that the search included all the suffixes and prefixes like:
run* will give you run, runs, running, etc.
Finally, I invite you to see for yourself when the exact same word is translated one way versus the other, Sabbath vs. first day of the week.
After the verse I put the KJV translation.
Matt 12:2 Sabbath –
οι δε φαρισαιοι ιδοντες ειπον αυτω ιδου οι μαθηται σου ποιουσιν ο ουκ εξεστι ποιειν εν σαββατω
But when the Pharisees saw it, they said to him, “Look, your disciples are doing what is not lawful to do on the Sabbath.”
Matt 12:5 Sabbath – Sabbath –
η ουκ ανεγνωτε εν τω νομω οτι τοις σαββασιν οι ιερεις εν τω ιερω το σαββατον βεβηλουσι και αναιτιοι εισι;
Or have ye not read in the law, how that on the sabbath days the priests in the temple profane the sabbath, and are blameless?
Matt 12:8 Sabbath –
κυριος γαρ εστι και του σαββατου ο υιος του ανθρωπου
For the Son of man is Lord even of the sabbath day.
Matt 24:20 Sabbath –
προσευχεσθε δε ινα μη γενηται η φυγη υμων χειμωνος μηδε εν σαββατω
But pray ye that your flight be not in the winter, neither on the sabbath day:
Matt 28:1 Sabbath, first day of the week –
οψε δε σαββατων τη επιφωσκουση εις μιαν σαββατων ηλθε μαρια η μαγδαληνη και η αλλη μαρια θεωρησαι τον ταφον
In the end of the sabbath, as it began to dawn toward the first day of the week, came Mary Magdalene and the other Mary to see the sepulchre.
Mark 2:27 Sabbath – Sabbath –
και ελεγεν αυτοις το σαββατον δια τον ανθρωπον εγενετο ουχ ο ανθρωπος δια το σαββατον
And he said unto them, The sabbath was made for man, and not man for the sabbath:
Mark 2:28 Sabbath –
ωστε κυριος εστιν ο υιος του ανθρωπου και του σαββατου
Therefore the Son of man is Lord also of the sabbath.
Mark 6:2 Sabbath –
και γενομενου σαββατου ηρξατο εν τη συναγωγη διδασκειν και πολλοι ακουοντες εξεπλησσοντο λεγοντες ποθεν τουτω ταυτα; και τις η σοφια η δοθεισα αυτω οτι και δυναμεις τοιαυται δια των χειρων αυτου γινονται;
And when the sabbath day was come, he began to teach in the synagogue: and many hearing him were astonished, saying, From whence hath this man these things? and what wisdom is this which is given unto him, that even such mighty works are wrought by his hands?
Mark 15:42 Sabbath –
και ηδη οψιας γενομενης ( επει ην παρασκευη ο εστι προσαββατον )
And now when the even was come, because it was the preparation, that is, the day before the sabbath,
Mark 16:1 Sabbath –
και διαγενομενου του σαββατου μαρια η μαγδαληνη και μαρια η του ιακωβου και σαλωμη ηγορασαν αρωματα ινα ελθουσαι αλειψωσιν αυτον
And when the sabbath was past, Mary Magdalene, and Mary the mother of James, and Salome, had bought sweet spices, that they might come and anoint him.
Mark 16:2 first day of the week –
και λιαν πρωι της μιας σαββατων ερχονται επι το μνημειον ανατειλαντος του ηλιου
And very early in the morning the first day of the week, they came unto the sepulchre at the rising of the sun.
Mark 16:9 first day of the week –
αναστας δε πρωι πρωτη σαββατου εφανη πρωτον μαρια τη μαγδαληνη αφ ης εκβεβληκει επτα δαιμονια
Now when Jesus was risen early the first day of the week, he appeared first to Mary Magdalene, out of whom he had cast seven devils.
Luke 4:16 Sabbath –
και ηλθεν εις την { ναζαρετ}{ ναζαρεθ} ου ην τεθραμμενος και εισηλθε κατα το ειωθος αυτω εν τη ημερα των σαββατων εις την συναγωγην και ανεστη αναγνωναι
And he came to Nazareth, where he had been brought up: and, as his custom was, he went into the synagogue on the sabbath day, and stood up for to read.
Luke 6:1 Sabbath –
εγενετο δε εν σαββατω δευτεροπρωτω διαπορευεσθαι αυτον δια των σποριμων και ετιλλον οι μαθηται αυτου τους σταχυας και ησθιον ψωχοντες ταις χερσι
And it came to pass on the second sabbath after the first, that he went through the corn fields; and his disciples plucked the ears of corn, and did eat, rubbing them in their hands.
Luke 6:5 Sabbath –
και ελεγεν αυτοις οτι κυριος εστιν ο υιος του ανθρωπου και του σαββατου
And he said unto them, That the Son of man is Lord also of the sabbath.
Luke 6:6 Sabbath –
εγενετο δε και εν ετερω σαββατω εισελθειν αυτον εις την συναγωγην και διδασκειν και ην εκει ανθρωπος και η χειρ αυτου η δεξια ην ξηρα
And it came to pass also on another sabbath, that he entered into the synagogue and taught: and there was a man whose right hand was withered.
Luke 6:7 Sabbath –
παρετηρουν δε αυτον οι γραμματεις και οι φαρισαιοι ει εν τω σαββατω θεραπευσει ινα ευρωσι κατηγοριαν αυτου
And the scribes and Pharisees watched him, whether he would heal on the sabbath day; that they might find an accusation against him.
Luke 13:14 Sabbath – Sabbath –
αποκριθεις δε ο αρχισυναγωγος αγανακτων οτι τω σαββατω εθεραπευσεν ο ιησους ελεγε τω οχλω εξ ημεραι εισιν εν αις δει εργαζεσθαι εν ταυταις ουν ερχομενοι θεραπευεσθε και μη τη ημερα του σαββατου
And the ruler of the synagogue answered with indignation, because that Jesus had healed on the sabbath day, and said unto the people, There are six days in which men ought to work: in them therefore come and be healed, and not on the sabbath day.
Luke 13:15 Sabbath –
απεκριθη ουν αυτω ο κυριος και ειπεν υποκριτα εκαστος υμων τω σαββατω ου λυει τον βουν αυτου η τον ονον απο της φατνης και απαγαγων ποτιζει;
The Lord then answered him, and said, Thou hypocrite, doth not each one of you on the sabbath loose his ox or his ass from the stall, and lead him away to watering?
Luke 13:16 Sabbath –
ταυτην δε θυγατερα αβρααμ ουσαν ην εδησεν ο σατανας ιδου δεκα και οκτω ετη ουκ εδει λυθηναι απο του δεσμου τουτου τη ημερα του σαββατου;
And ought not this woman, being a daughter of Abraham, whom Satan hath bound, lo, these eighteen years, be loosed from this bond on the sabbath day?
Luke 14:1 Sabbath –
και εγενετο εν τω ελθειν αυτον εις οικον τινος των αρχοντων των φαρισαιων σαββατω φαγειν αρτον και αυτοι ησαν παρατηρουμενοι αυτον
And it came to pass, as he went into the house of one of the chief Pharisees to eat bread on the sabbath day, that they watched him.
Luke 14:3 Sabbath –
και αποκριθεις ο ιησους ειπε προς τους νομικους και φαρισαιους λεγων ει εξεστι τω σαββατω θεραπευειν;
And Jesus answering spake unto the lawyers and Pharisees, saying, Is it lawful to heal on the sabbath day?
Luke 14:5 Sabbath –
και αποκριθεις προς αυτους ειπε τινος υμων ονος η βους εις φρεαρ εμπεσειται και ουκ ευθεως ανασπασει αυτον εν τη ημερα του σαββατου;
And answered them, saying, Which of you shall have an ass or an ox fallen into a pit, and will not straightway pull him out on the sabbath day?
Luke 18:12 twice in the week –
νηστευω δις του σαββατου αποδεκατω παντα οσα κτωμαι
I fast twice in the week, I give tithes of all that I possess.
Luke 23:54 Sabbath –
και ημερα ην παρασκευη και σαββατον επεφωσκε
And that day was the preparation, and the sabbath drew on.
Luke 23:56 Sabbath –
υποστρεψασαι δε ητοιμασαν αρωματα και μυρα και το μεν σαββατον ησυχασαν κατα την εντολην
And they returned, and prepared spices and ointments; and rested the sabbath day according to the commandment.
Luke 24:1 first day of the week –
τη δε μια των σαββατων ορθρου βαθεος ηλθον επι το μνημα φερουσαι α ητοιμασαν αρωματα και τινες συν αυταις
Now upon the first day of the week, very early in the morning, they came unto the sepulchre, bringing the spices which they had prepared, and certain others with them.
John 5:9 Sabbath –
και ευθεως εγενετο υγιης ο ανθρωπος και ηρεν τον κραββατον αυτου και περιεπατει ην δε σαββατον εν εκεινη τη ημερα
And immediately the man was made whole, and took up his bed, and walked: and on the same day was the sabbath.
John 5:10 Sabbath
ελεγον ουν οι ιουδαιοι τω τεθεραπευμενω σαββατον εστιν ουκ εξεστι σοι αραι τον κραββατον
The Jews therefore said unto him that was cured, It is the sabbath day: it is not lawful for thee to carry thy bed.
John 5:16 Sabbath –
και δια τουτο εδιωκον τον ιησουν οι ιουδαιοι και εζητουν αυτον αποκτειναι οτι ταυτα εποιει εν σαββατω
And therefore did the Jews persecute Jesus, and sought to slay him, because he had done these things on the sabbath day.
John 5:18 Sabbath –
δια τουτο ουν μαλλον εζητουν αυτον οι ιουδαιοι αποκτειναι οτι ου μονον ελυε το σαββατον αλλα και πατερα ιδιον ελεγε τον θεον ισον εαυτον ποιων τω θεω
Therefore the Jews sought the more to kill him, because he not only had broken the sabbath, but said also that God was his Father, making himself equal with God.
John 7:22 Sabbath –
δια τουτο μωσης δεδωκεν υμιν την περιτομην ( ουχ οτι εκ του μωσεως εστιν αλλ εκ των πατερων ) και εν σαββατω περιτεμνετε ανθρωπον
Moses therefore gave unto you circumcision; (not because it is of Moses, but of the fathers;) and ye on the sabbath day circumcise a man.
John 7:23 Sabbath – Sabbath –
ει περιτομην λαμβανει ανθρωπος εν σαββατω ινα μη λυθη ο νομος μωσεως εμοι χολατε οτι ολον ανθρωπον υγιη εποιησα εν σαββατω;
If a man on the sabbath day receive circumcision, that the law of Moses should not be broken; are ye angry at me, because I have made a man every whit whole on the sabbath day?
John 9:14 Sabbath –
ην δε σαββατον οτε τον πηλον εποιησεν ο ιησους και ανεωξεν αυτου τους οφθαλμους
And it was the sabbath day when Jesus made the clay, and opened his eyes.
John 9:16 Sabbath –
ελεγον ουν εκ των φαρισαιων τινες ουτος ο ανθρωπος ουκ εστι παρα του θεου οτι το σαββατον ου τηρει αλλοι ελεγον πως δυναται ανθρωπος αμαρτωλος τοιαυτα σημεια ποιειν; και σχισμα ην εν αυτοις
Therefore said some of the Pharisees, This man is not of God, because he keepeth not the sabbath day. Others said, How can a man that is a sinner do such miracles? And there was a division among them.
John 19:31 Sabbath – Sabbath –
οι ουν ιουδαιοι ( { επει παρασκευη ην} ινα μη μεινη επι του σταυρου τα σωματα εν τω σαββατω { επει παρασκευη ην} ην γαρ μεγαλη η ημερα εκεινου του σαββατου ) ηρωτησαν τον πιλατον ινα κατεαγωσιν αυτων τα σκελη και αρθωσιν
The Jews therefore, because it was the preparation, that the bodies should not remain upon the cross on the sabbath day, (for that sabbath day was an high day,) besought Pilate that their legs might be broken, and that they might be taken away.
John 20:1 first day of the week –
τη δε μια των σαββατων μαρια η μαγδαληνη ερχεται πρωι σκοτιας ετι ουσης εις το μνημειον και βλεπει τον λιθον ηρμενον εκ του μνημειου
The first day of the week cometh Mary Magdalene early, when it was yet dark, unto the sepulchre, and seeth the stone taken away from the sepulchre.
John 20:19 first day of the week –
ουσης ουν οψιας τη ημερα εκεινη τη μια των σαββατων και των θυρων κεκλεισμενων οπου ησαν οι μαθηται συνηγμενοι δια τον φοβον των ιουδαιων ηλθεν ο ιησους και εστη εις το μεσον και λεγει αυτοις ειρηνη υμιν
Then the same day at evening, being the first day of the week, when the doors were shut where the disciples were assembled for fear of the Jews, came Jesus and stood in the midst, and saith unto them, Peace be unto you.
Acts 1:12 Sabbath –
τοτε υπεστρεψαν εις ιερουσαλημ απο ορους του καλουμενου ελαιωνος ο εστιν εγγυς ιερουσαλημ σαββατου εχον οδον
Then returned they unto Jerusalem from the mount called Olivet, which is from Jerusalem a sabbath day’s journey.
Acts 13:14 Sabbath –
αυτοι δε διελθοντες απο της περγης παρεγενοντο εις αντιοχειαν της πισιδιας και εισελθοντες εις την συναγωγην τη ημερα των σαββατων εκαθισαν
But when they departed from Perga, they came to Antioch in Pisidia, and went into the synagogue on the sabbath day, and sat down.
Acts 13:27 Sabbath –
οι γαρ κατοικουντες εν ιερουσαλημ και οι αρχοντες αυτων τουτον αγνοησαντες και τας φωνας των προφητων τας κατα παν σαββατον αναγινωσκομενας κριναντες επληρωσαν
For they that dwell at Jerusalem, and their rulers, because they knew him not, nor yet the voices of the prophets which are read every sabbath day, they have fulfilled them in condemning him.
Acts 13:42 Sabbath –
εξιοντων δε εκ της συναγωγης των ιουδαιων παρεκαλουν τα εθνη εις το μεταξυ σαββατον λαληθηναι αυτοις τα ρηματα ταυτα
And when the Jews were gone out of the synagogue, the Gentiles besought that these words might be preached to them the next sabbath.
Acts 13:44 Sabbath –
τω δε ερχομενω σαββατω σχεδον πασα η πολις συνηχθη ακουσαι τον λογον του θεου
And the next sabbath day came almost the whole city together to hear the word of God.
Acts 15:21 Sabbath –
μωσης γαρ εκ γενεων αρχαιων κατα πολιν τους κηρυσσοντας αυτον εχει εν ταις συναγωγαις κατα παν σαββατον αναγινωσκομενος
For Moses of old time hath in every city them that preach him, being read in the synagogues every sabbath day.
Acts 16:13 Sabbath –
τη τε ημερα των σαββατων εξηλθομεν εξω της πολεως παρα ποταμον ου ενομιζετο προσευχη ειναι και καθισαντες ελαλουμεν ταις συνελθουσαις γυναιξι
And on the sabbath we went out of the city by a river side, where prayer was wont to be made; and we sat down, and spake unto the women which resorted thither.
Acts 17:2 Sabbath –
κατα δε το ειωθος τω παυλω εισηλθε προς αυτους και επι σαββατα τρια διελεγετο αυτοις απο των γραφων
And Paul, as his manner was, went in unto them, and three sabbath days reasoned with them out of the scriptures,
Acts 18:4 Sabbath –
διελεγετο δε εν τη συναγωγη κατα παν σαββατον επειθε τε ιουδαιους και ελληνας
And he reasoned in the synagogue every sabbath, and persuaded the Jews and the Greeks.
Acts 20:7 first day of the week –
εν δε τη μια των σαββατων συνηγμενων των μαθητων του κλασαι αρτον ο παυλος διελεγετο αυτοις μελλων εξιεναι τη επαυριον παρετεινε τε τον λογον μεχρι μεσονυκτιου
And upon the first day of the week, when the disciples came together to break bread, Paul preached unto them, ready to depart on the morrow; and continued his speech until midnight.
1Cor 16:2 first day of the week –
κατα μιαν σαββατων εκαστος υμων παρ εαυτω τιθετω θησαυριζων ο τι αν ευοδωται ινα μη οταν ελθω τοτε λογιαι γινωνται
Upon the first day of the week let every one of you lay by him in store, as God hath prospered him, that there be no gatherings when I come.
Col 2:16 Sabbath –
μη ουν τις υμας κρινετω εν βρωσει η εν ποσει η εν μερει εορτης η νουμηνιας η σαββατων
Let no man therefore judge you in meat, or in drink, or in respect of an holyday, or of the new moon, or of the sabbath days:
Heb 4:9 rest –
αρα απολειπεται σαββατισμος τω λαω του θεου
There remaineth therefore a rest to the people of God.
So here we have all these verse and the only pattern to translating Sabbath to “first day of the week” is to separate the Christians from the Jews.
Note how Luke 6:1 makes more sense now that you know “first” of seven Sabbaths to be counted, that Jesus was in the corn field the Second Sabbath of seven! 
English
Arabic
Chinese (Simplified)
Dutch
French
German
Italian
Portuguese
Russian
Spanish