1. When you teach your kids, you need to be hard-nosed and say, "That's the way it is. No negotiations." Otherwise, your kids may keep arguing with you and tire you out.2. As a Christian, do not give up your position and succumb to worldly matters that contradict the Bible's principles.
 be hard-nosed do not give up
Team A's defeat over Team B is considered the biggest underdo victory in basketball history.