'Lawful' in the Bible

But some of the Pharisees said, “Why are you doing what is not lawful on the Sabbath?”

how he entered the house of God, and took and ate the sacred bread, which is not lawful for any but the priests to eat? He even gave some to those who were with him.”

Then Jesus said to them, “I ask you: Is it lawful on the Sabbath to do what is good or to do what is evil, to save life or to destroy it?”

In response, Jesus asked the law experts and the Pharisees, “Is it lawful to heal on the Sabbath or not?”

Is it lawful for us to pay taxes to Caesar or not?”