Question 3
Where is the second text that mentions Sunday?
Bible
Matthew 28:1
"In the end of the Sabbath, as it began to dawn toward the first day of the week, came Mary Magdalene and the other Mary to see the sepulcher."
Answer
Does this text tell us that Sunday is the new Sabbath? No, it simply tells us that Mary waited until the Sabbath was over before she returned to see the sepulcher (or tomb) on Sunday. Matthew wrote this 29 years after Jesus’ death and still called the 7th Day the “Sabbath”. If the 1st day was the new Sabbath he would have mentioned it here.