Since you brought up the Sabbath, can you tell me what verse, God changed the Sabbath. Where did God change this commandment?
Deuteronomy 12
32 What thing soever I command you, observe to do it: thou shalt not add thereto, nor diminish from it.
I make no claim that God has changed His Sabbath. There is no Biblical support for such that I know of.
Perhaps you could point us to the verse that commands the Sabbath to the church and the changing of the day to Sunday?