Those who deny the Sabbath commandment of God and stick to the Sunday service claim that the Sunday service has been observed since the Early Church which held Communion on Sunday.
On the first day of the week [On Sunday] we came together to break bread. Paul spoke to the people and, because he intended to leave the next day, kept on talking until midnight. (Acts 20:7)
Is this really evidence that the worship service was held on the first day of every week or on Sundays?
As his custom was, Paul went into the synagogue, and on three Sabbath days he reasoned with them from the Scriptures [the Bible] (Acts 17:2)
Every Sabbath he [Paul] reasoned in the synagogue, trying to persuade Jews and Greeks. (Acts 18:4)
In Acts Chapters 13, 16, 17 and 18, the Apostle Paul did not worship on the first day of the week, but on Sabbath day every week. Then, which service was held on “the first day of the week” in Acts Chapter 20.
But we sailed from Philippi after the Feast of Unleavened Bread, and five days later joined the others at Troas, where we stayed seven days.┬áOn the first day of the week [On Sunday] we came together to break bread. (Acts 20:6-7)
The first day of week was the next day of the Sabbath after the Feast of Unleavened Bread. Among the feasts of the Old Testament, the first day of week after the Feast of Unleavened Bread was the Day of Firstfruits.
On the fifteenth day of that month (of the sacred calendar) the LORD’S Feast of Unleavened Bread begins; for seven days you must eat bread made without yeast… When you enter the land I am going to give you and you reap its harvest, bring to the priest a sheaf of the first grain [the sheaf of the first fruits: NASB]┬áyou harvest.┬áHe is to wave the sheaf before the LORD so it will be accepted on your behalf; the priest is to wave it on the day after the Sabbath [on Sunday]. (Leviticus 23:6-11)
Jesus was resurrected on the first day of the week, every early in the morning, after┬áthe Feast of Unleavened Bread, which fulfilled the reality of the Day of Firstfruits when a sheaf of the first grain was offered.
But Christ has indeed been raised from the dead, the firstfruits of those who have fallen asleep. (1 Corinthians 15:20)
On the first day of the week, very early in the morning… Why do you look for the living among the dead?┬áHe [Jesus] is not here; he has risen! (Luke 24:1-6)
Therefore, “the first day of week after the Feast of Unleavened Bread,” which was┬áthe Day of Firstfruits of the Old Testament, became the day celebrating the Resurrection of Jesus in the New Testament time. Jesus took bread, gave thanks, broke it and gave it to His disciples on the day He was resurrected. Then their eyes were opened and they recognized Jesus (Luke 24:13-35.) For this reason, the members of the Early Church broke bread, which meant it would open spiritual eyes to recognize Christ. It’s different from the Passover bread and wine.
So ignorant are those who insist that the Sabbath changed to Sunday by quoting record of keeping the Resurrection Day, without knowing the Bible. Moreover, the Sabbath is a weekly feast, observed on the seventh day of every week, and the Day of Firstfruits, or the Resurrection Day is an annual feast, observed on the first day of week after the Feast of Unleavened Bread. The Sabbath day and the Resurrection Day are totally different feasts. The date and the meaning of the two feasts are different.
It’s really absurd to claim that the Sabbath day, a weekly feast, changed to Sunday by citing record of keeping the Resurrection Day, an annual feast.