Christ Ahnsahnghong established the Church of God! The exact name is ? (2)

World Mission Society Church of God!

Apostle Paul clearly said if one is to change the Word of Christ he is cursed by God! For this reason God Almighty gave the warning not to add or take away from the Bible (Rev 22:18). Then, what teachings did the Early Church keep that Apostle Paul so baldly defended?

Luke 4:16     - Sabbath Day 

Mt 26:17,26  - Passover & Unleavened Bread 

John 7         - Feast of Tabernacles 

Acts 2:1       - Feast of Pentecost