1Ti 1:7 Desiring to be teachers of the law; understanding neither what they say, nor whereof they affirm.
Ample evidence from history shows that the celebration of Sunday originated from pagan practices of SUN WORSHIP. In March of 321 A.D., the Roman Emperor Constantine, who was at first a sun-worshiper and later a Christian convert, issued the first decree declaring Sunday to be a legal day of rest. In 336 A.D., the Roman Catholic Church officially changed the observance of Sabbath to Sunday for political and economic expediency. Since then, the original Sabbath gradually gave way to Sunday observance and the practice remains to this day.