One cannot be kept without the other.
Acts 15 -
They were already keeping Sabbath, so why the need to tell them to obey that which they already obeyed? See
Acts [you know like '
good works' through living faith]:
Acts 13:14 KJB - 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 KJB - 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 KJB - 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 KJB - And the next sabbath day came almost the whole city together to hear the word of God.
Acts 14:15 KJB - And saying, Sirs, why do ye these things? We also are men of like passions with you, and preach unto you that ye should turn from these vanities unto the living God, which made heaven, and earth, and the sea, and all things that are therein:
Acts 14:16 KJB - Who in times past suffered all nations to walk in their own ways.
As it was foretold in Isaiah 56:1-8; Amos 9:11-12, etc. The council already acknowledges that the Gentiles were meeting on Sabbath and would hear the word of God read:
Acts 15:21 KJB - For Moses of old time hath in every city them that preach him, being read in the synagogues every sabbath day.