'Lawful' in the Bible

how he entered the house of God, took and ate the sacred bread, which is not lawful for any to eat but the priests alone, and gave it to his companions?"

Then Jesus said to them, "I ask you, is it lawful to do good on the Sabbath or to do evil, to save a life or to destroy it?"

So Jesus asked the experts in religious law and the Pharisees, "Is it lawful to heal on the Sabbath or not?"