'Careful' in the Bible

He then directed them to go to Bethlehem, adding, "Go and make careful inquiry about the child, and when you have found him, bring me word, that I too may come and do him homage."

and Jesus said to him, "Be careful to tell no one, but go and show yourself to the priest, and offer the gift which Moses appointed as evidence for them."

Then their eyes were opened. And assuming a stern tone Jesus said to them, "Be careful to let no one know."