How can God condemn the whole world for doing something that is NOT prohibited by scripture? There is no scripture in the Bible that says, “THOU SHALT NOT ASSEMBLE TOGETHER WITH OTHER BELIEVERS ON THE FIRST DAY OF THE WEEK!” If that were the case then Paul would be guilty of doing the same thing as those who will later receive the Mark of the Beast.
Whether Acts 20:7 teaches that the Christians met Saturday night as the first day of the week began, as Adventist assert or if they met Sunday morning as Evangelicals believe SIMPLY DOES NOT MATTER. The fact remains either way that the Bible gives the example of New Testament Christians ASSEMBLING TOGETHER ON THE FIRST DAY OF THE WEEK. They even heard a lengthy sermon on the first day of the week. How can God approve of Paul doing so, and then later condemn the WHOLE WORLD and torture them in the lake of fire or doing the exact same thing Paul and the early church did?
Either way you interpret Acts 20:7 it is still a group of Christians assembling on the first day of the week and listening to a sermon. Even if this only happened once as Adventist like to believe, it still happened. The Bible nowhere says, “IF YOU ASSEMBLE TOGETHER ON ANY OTHER DAY OTHER THAN THE 7th DAY, ESPECIALLY IF YOU ASSEMBLE ON THE 1st DAY OF THE WEEK YOU WILL BE CAST INTO THE LAKE OF FIRE WHERE THERE WILL BE WEEPING AND GNASHING OF TEETH.”
Again! How can God condemn the whole world for doing something that is NOT prohibited in the Bible? How can God justify demonstrating His wrath poured out without mercy against people, without one scripture in the Bible warning against assembling together on the first day of the week? Assembling together on Sunday DOES NOT VIOLATE the Ten Commandments anymore than gathering together on Wednesday for a mid-week meeting!