The 7th day sabbath was never given to anyone except the Israelites who were at Mt Sinai after being delivered from Egyptian bondage.
It was never given to Abraham, Isaac or Jacob, the ones that the Israelites looked to as their father. It was never given to the Gentiles.
It was a part of the covenant that God gave to Israel and Israel only, and it was to last only until Christ came who would give a better covenant.
Nehemiah 9:13...….
"Then You came down on Mount Sinai, And spoke with them from heaven; You gave them just ordinances and true laws, Good statutes and commandments. So You made known to them Your holy sabbath, And laid down for them commandments, statutes and law, Through Your servant Moses."
Deut. 5:14...…………
" but the seventh day is a sabbath of the Lord your God; in it you shall not do any work, you or your son or your daughter or your male servant or your female servant or your ox or your donkey or any of your cattle or your sojourner who stays with you, so that your male servant and your female servant may rest as well as you."
The Israelites were the ones that were slaves in Egypt, no one else therefore the law of the sabbath applied only to them.
The apostles were ministers of a New Covenant:
2 Cor 3:6, who also made us adequate as servants of a new covenant, not of the letter but of the Spirit; for the letter kills, but the Spirit gives life.
The Old Covenant had no provision for the forgiveness of sins, the New Covenant does.
Christ arose from the dead on the
first day of the week, (
Matt. 28:1).
The church began on the
first day of the week, (
Acts 2:47)
The first century church worshiped and observed the Lords' Supper on the
first day of the week, (
Acts 20:7).
The early church gave of their means on the
first day of the week when they came together to worship. (
1 Cor 16:1-2)
All history, both church history and secular history show that the early church met for
worship on the first day of the week.
The sabbath was a part of the Law of God, the Law of Moses which was ended when Christ died on the cross. (
Col 2:14)
The observance of the first day of the week began when the church began, on the first day of Pentecost following the resurrection of Christ. (Acts 2).