The evidence you can provide is where Scripture says Sunday is the new Sabbath. Surely you have more than the two you provided which say nothing about the Sabbath being changed to Sunday.
As for my evidence, it comes from Scripture. Paul kept the Sabbath.
...the Gentiles begged that these words might be preached to them the next Sabbath. Now when the congregation had broken up, many of the Jews and devout proselytes followed Paul and Barnabas, who, speaking to them, persuaded them to continue in the grace of God. On the next Sabbath almost the whole city came together to hear the word of God. (Acts 13:42-44)
Preaching and teaching to the Gentiles by the apostles took place on the Sabbath, not Sunday.
Notice also that teaching on the Sabbath was Paul's custom:
Now when they had passed through Amphipolis and Apollonia, they came to Thessalonica, where there was a synagogue of the Jews. Then Paul, as his custom was, went in to them, and for three Sabbaths reasoned with them from the Scriptures, explaining and demonstrating that the Messiah had to suffer and rise again from the dead, and saying, "This Yeshua whom I preach to you is the Messiah." And some of them were persuaded; and a great multitude of the devout Greeks, and not a few of the leading women, joined Paul and Silas. (Acts 17:1-4)
Also Acts 18:4 states:
And he reasoned in the synagogue every Sabbath, and persuaded both Jews and Greeks.
Greeks attending the synagogue service on Sabbath? When they received Yeshua did they suddenly start going to Sunday church?
Paul said;
"Imitate me, just as I also imitate Messiah. (1 Corinthians 11:1)
Messiah Yeshua kept the 7th day Sabbath until the day he died. Paul imitated him. We are to imitate Paul and Yeshua as well. If Paul kept Sunday, he certainly was NOT imitating Messiah.
Paul also said in Acts 25:8;
While he answered for himself, Neither against the law of the Jews, neither against the temple, nor yet against Caesar, have I offended any thing at all.
and in Acts 28:17;
And it came to pass, that after three days Paul called the chief of the Jews together: and when they were come together, he said unto them, Men and brethren, though I have committed nothing against the people, or customs of our fathers, yet was I delivered prisoner from Jerusalem into the hands of the Romans.
Had Paul abandoned the 7th day Sabbath in favor of Sunday, he would not only have broken the law, but would have immensely offended the Jews.
Paul died around 65 CE. Before he died he said, "For I know this, that after my departing shall grievous wolves enter in among you,
not sparing the flock." Acts 20:29. How do you understand that?
