Irrespective of your beliefs and whether you are a Sunday worshipper or Saturday, it is essential to understand how Sunday Worshipping came about.
The fourth commandment that God gave us is to remember the Sabbath day to keep it holy. Saturday is the seventh day of the week hence the sabbath day. I am not God, and I am not telling anyone you must worship on Saturday. However, if we are following the teaching of God them, we must obey his words.
According to documented evidence, Sunday worship came about on March 7, 321. Roman Emperor Constantine, I issued a civil decree making Sunday a day of rest from labour, stating: All judges and city people and the craftsmen shall rest upon the venerable day of the sun. The Catholic Church endorsed this.
However, we should observe the seventh day of the week (Saturday). As the Sabbath of the Lord our God. The evening is at sunset when the day ends and another day begins. No other day has ever been, sanctified as the day of rest. The Sabbath Day begins at sundown on Friday and ends at sunset on Saturday.
The Bible tells us to judge not that he may be judge and therefore, I am not in the business of saying if you do not observe the sabbath, then you will go to hell that is a decision for God. But God told you in Matthew 5:18 For verily I say unto you, Till heaven and earth pass, one jot or one tittle shall in no wise pass from the law, till all be, fulfilled.
He reiterates His message in Matthew 24:35 Heaven and earth shall pass away, but my words shall not pass away. You need to understand that God will not allow His words to be trample on or disobeyed.