Do to others whatever you would have them do to you.
This is the Law and the Prophets. (Mt 7:6,12-14)

I remember the 3rd grade class at Sacred Heart School in Salisbury acting out the story of the writing of the gospels. One kid asked, “What did Jesus say? “Do unto others then they will do unto you?” Another kid answered, “No, Jesus said, “Do unto others before they do unto you.” But still a third kid said, “No, Jesus said, “Do to others whatever you would have them do to you.” I’m not sure exactly how the gospel writers remembered everything that Jesus said and did . . . but I’m sure glad they got it right!