In my more than 30 years teaching junior high classes of church school, I made it a practice to start the school year, every year, with the frightening passage in Matthew chapter 10, especially verses 34 to 39 in which Jesus warns his disciples:

“One’s foes will be members of one’s own household,” and recommends what might seem especially odd on Father’s Day: “I have not come to bring peace, but a sword. For I have come to set a man against his father. … Whoever loves father more than me is not worthy of me; and whoever does not take up the cross and follow me is not worthy of me.”