The number 1 why question we get as a congregation is
“Why do you met on Saturday and not Sunday to worship?
Here is the answer to that why:
Saturday (the 7th day) is the Sabbath day that God has told us to set apart (Genesis 2:1-3).
Sabbath is found in the fourth commandment of the 10 Commandments (Exodus 20:8-11).
It is God’s Sabbath, for all His children, not the Jewish Sabbath. (Exodus 20:10, Leviticus 23:1-2)
It is the day we stop our normal work, rest, and meet together. (Leviticus 23:3) Sabbath is transliterated from the Hebrew "shabbath" meaning “intermission” or “to cease”.
God takes keeping the Sabbath serious. (Numbers 15:30-36) The Sabbath is the sign that shows the world that we are God’s people. (Exodus 31:17)
Jesus worshipped on the Sabbath. (Luke 4:16)
Jesus taught us that the Sabbath was made for us (Mark 2:27)
Jesus is the Lord of the Sabbath. (Matthew 12:8)
Paul worshipped on the Sabbath. (Acts 17:2)
Paul preached on the Sabbath. (Acts 13:42-44)
The Sabbath will be kept in heaven, forever. (Isaiah 66:22-23).
Why, then, do many keep Sunday, you ask? Well, you would have to ask them. But as we put the first day, Sunday, to the test of Bible truth, we find it must fall, with all the other traditional teachings of mankind. Because God set the 7th day Sabbath and He doesn’t change, Jesus didn’t change it, and we mustn't try to change His word. (Malachi 3:6, Matthew 5:18, Deuteronomy 4:2,Deuteronomy 12:32,Revelation 22:18)
It is exciting to see that in these last days, in fulfillment of Bible prophecy, the true Sabbath is again being revealed. It is our prayer that all of Christianity sees it before Jesus returns.