'Take Heed' in the Bible

And Pharaoh said to him, Depart from me, take heed to thyself, see my face no more: for in that day thou seest my face, thou shalt die.

And thou shalt set bounds to the people round about, saying, Take heed to yourselves, that ye go not up upon the mount, or touch the border of it: whoever toucheth the mount shall be surely put to death:

Take heed to thyself, lest thou make a covenant with the inhabitants of the land whither thou goest, lest it be for a snare in the midst of thee: