Cntradictions exist within Christianity (e.g. Salvation, Sabbath) ...
"The Pope stands in the place of Jesus Himself as The "Vicar of Christ on earth." He is the head of the Catholic Church and Her nearly 1.3 billion Catholics, and is responsible for the SALVATION of all the Souls throughout the entire world."
They believe (as history has record) that the RCC did so as a way of distancing Christendom from Judaism. And yet today there are more than a few Christian congregations that recognize Saturday (7th day of the week) as being both the OT & NT Biblical sabbath. However, 1st day Sabbath churches contend that 7th day Christian churches aren't really Christians.
How far the pro-Sunday tendency had gone by the end of the sixth century is shown by a letter of Gregory the Great (pope between 590 and 604), which even forbade bathing on the first day of the week, often called “the day of the (resurrection of the) Lord.” Thus, Saturday Sabbath (7th Day) was abandoned as a day of worship, and Sunday (1st Day) took over (at least partially) as the Christian Sabbath.
Sunday Sabbath Laws in Ontaario - c. 1911
Exodus 20:8-11 (KJV)
8 Remember the Sabbath day by keeping it holy. 9 Six days you shall labor and do all your work, 10 but the seventh day is a sabbath to the Lord your God. On it you shall not do any work, neither you, nor your son or daughter, nor your male or female servant, nor your animals, nor any foreigner residing in your towns. 11 For in six days the Lord made the heavens and the earth, the sea, and all that is in them, but he rested on the seventh day. Therefore the Lord blessed the Sabbath day and made it holy.
Deuteronomy 5:12-15 (KJV)
12 Keep the sabbath day to sanctify it, as the Lord thy God hath commanded thee.
13 Six days thou shalt labour, and do all thy work:
14 But the seventh day is the sabbath of the Lord thy God: in it thou shalt not do any work, thou, nor thy son, nor thy daughter, nor thy manservant, nor thy maidservant, nor thine ox, nor thine ass, nor any of thy cattle, nor thy stranger that is within thy gates; that thy manservant and thy maidservant may rest as well as thou.
15 And remember that thou wast a servant in the land of Egypt, and that the Lord thy God brought thee out thence through a mighty hand and by a stretched out arm: therefore the Lord thy God commanded thee to keep the sabbath day.
Two Questions ...
1. Do you believe Paul's conversion sabbath was at sundown the beginning of the 7th day or at sunrise the beginnng of the 1st day of the week?
2. Do you believe it's important to one's NT
SALVATION whether or not the Christian sabbath is on the 7th day (Saturday) or 1st day (Sunday) of the week?