'Is It Lawful' in the Bible

He said to them, "Is it lawful on the Sabbath day to do good, or to do harm? To save a life, or to kill?" But they were silent.

Pharisees came to him testing him, and asked him, "Is it lawful for a man to divorce his wife?"

When they had come, they asked him, "Teacher, we know that you are honest, and don't defer to anyone; for you aren't partial to anyone, but truly teach the way of God. Is it lawful to pay taxes to Caesar, or not?