And yet Jesus, King of Heaven, is Lord of the Sabbath. Jesus did not omit Gentiles from His teaching. He said, He has other sheep who are not of this fold, meaning the Jews, who were to be brought into the flock. One flock, one Shepherd.
The Saint Apostle Paul in his journeys kept the Sabbath as was intended and exampled by Jesus.
The Book of Acts chapter 17:1 Now when they had passed through Amphipolis and Apollonia, they came to Thessalonica, where was a synagogue of the Jews: 2 and Paul, as his custom was, went in unto them, and for three [
a]sabbath days reasoned with them from the scriptures, 3 opening and alleging that it behooved the Christ to suffer, and to rise again from the dead; and that this Jesus, whom,
said he, I proclaim unto you, is the Christ.
It isn't a Catholic interpretation when Christians across America attend church on Sunday. Penance however, is a Catholic rite.
The Saint Apostle Paul didn't "become a Jew", Paul was a Jew, a Roman citizen, and a Pharisee. Meaning he knew the law of God backwards and forwards.
The churches Paul founded honored the Sabbath. The letter, epistle, to the church in Thessalonica praised the largely Gentile congregation there their faith and practices like unto that of Judea.
The epistle of
1 Thessalonians chapter 1:1 Paul, and Silvanus, and Timothy, unto the church of the Thessalonians in God the Father and the Lord Jesus Christ: Grace to you and peace.
2 We give thanks to God always for you all, making mention
of you in our prayers; 3 remembering without ceasing your work of faith and labor of love and [
a]patience of hope in our Lord Jesus Christ, before [
b]our God and Father; 4 knowing, brethren beloved of God, your election, 5 [
c]how that our [
d]gospel came not unto you in word only, but also in power, and in the Holy Spirit, and
in much [
e]assurance; even as ye know what manner of men we showed ourselves toward you for your sake. 6 And ye became imitators of us, and of the Lord, having received the word in much affliction, with joy of the Holy Spirit; 7 so that ye became an ensample to all that believe in Macedonia and in Achaia. 8 For from you hath sounded forth the word of the Lord, not only in Macedonia and Achaia, but in every place your faith to God-ward is gone forth; so that we need not to speak anything. 9 For they themselves report concerning us what manner of entering in we had unto you; and how ye turned unto God from idols, to serve a living and true God, 10 and to wait for his Son from heaven, whom he raised from the dead,
even Jesus, who delivereth us from the wrath to come.
FOOTNOTES
The Book of Acts chapter13:38 Be it known unto you therefore, brethren, that through this man is proclaimed unto you remission of sins: 39 and by him every one that believeth is justified from all things, from which ye could not be justified by the law of Moses. 40 Beware therefore, lest that come upon
you which is spoken in the prophets:
41 [
l]Behold, ye despisers, and wonder, and [
m]perish;
For I work a work in your days,
A work which ye shall in no wise believe, if one declare it unto you.
42 And as they went out, they besought that these words might be spoken to them the next sabbath. 43 Now when the synagogue broke up, many of the Jews and of the devout proselytes followed Paul and Barnabas; who, speaking to them, urged them to continue in the grace of God.
44 And the next sabbath almost the whole city was gathered together to hear the word of [
n]God. 45 But when the Jews saw the multitudes, they were filled with jealousy, and contradicted the things which were spoken by Paul, and [
o]blasphemed. 46 And Paul and Barnabas spake out boldly, and said, It was necessary that the word of God should first be spoken to you. Seeing ye thrust it from you, and judge yourselves unworthy of eternal life, lo, we turn to the Gentiles. 47 For so hath the Lord commanded us,
saying,
[
p]I have set thee for a light of the Gentiles,That thou shouldest be for salvation unto the uttermost part of the earth.
48 And as the Gentiles heard this, they were glad, and glorified the word of [
q]God: and as many as were ordained to eternal life believed. 49 And the word of the Lord was spread abroad throughout all the region. 50 But the Jews urged on the devout women of honorable estate, and the chief men of the city, and stirred up a persecution against Paul and Barnabas, and cast them out of their borders. 51 But they shook off the dust of their feet against them, and came unto Iconium. 52 And the disciples were filled with joy and with the Holy Spirit.