The Bible declares unequivocally that the Sabbath, Saturday, is the 7th day, and is holy and sanctified. That is Bible truth. Now you can of course choose to observe any day you wish...I will not argue with you on that score...and if you choose to keep another day fine, whether its the 8th day according to Barnabus, or the 1st day according to Tertulian that is your business. Just don't bother attempting to convince me that Sunday is a day approved of God...it is not, and there is nothing in scripture to prove otherwise. Sunday sacredness is a day sanctified and made mandatory by the Roman Catholic church, and handed down under pressure of persecution to the Protestant churches, tainted with pagan history, and having no Biblical support whatsoever. It is a church law, in direct contradiction to God's law. Follow your church if you must, but stop pretending your church is Biblical. Even your church boasts that nowhere in scripture is Sunday mandated. Nowhere. It is a church ordinance and that is all. Keeping Sunday is an observation you owe to Rome, not God.
And if you show me evidence (other than a declared "born again" experience) that Pence has thrown off his Catholic ties, great.