Jesus said to his disciples: “Do to others whatever you would have them do to you. This is the Law and the Prophets.” (Mt 7:12)
I remember a Children’s Mass that was trying to explain the challenge that gospel writers faced. One of kids, playing the part of the gospel writer, asked, “Jesus said something about doing to others . . . but what was that last part?” One kid answered: “Jesus said: Do unto others BEFORE they do unto you.” Well, another kid answered, “No, he didn’t say that, he said, “Do unto others THEN they’ll do unto you.” Finally, one kid gets it right, “No, Jesus said, ‘Do to others whatever you would have them do to you.” Being a gospel writer had it’s challenges!