'Take Heed' in the Bible

And Pharaoh said to him, Go away from me! Take heed to yourself; see my face no more. For in the day you see my face you shall die.

And you shall set bounds to the people round about, saying, Take heed to yourselves. Do not go up into the mountain, or touch the border of it. Whoever touches the mountain shall be surely put to death.

Take heed to yourself, lest you make a covenant with the people of the land where you go, lest it be for a snare in the midst of you.