'Careful' in the Bible

Now therefore, O Lord, the God of Israel, keep with Your servant David, my father, that which You promised him, saying, ‘You shall not fail to have a man to sit on the throne of Israel, provided your sons are careful to walk in My law as you, [David,] have walked before Me.’

and he said to the judges, “Be careful what you do, for you do not judge for man, but for the Lord who is with you in the matter of judgment.