'Take Heed' in the Bible

Nevertheless, they would not take heed, but turned their backs and stopped their ears, that they should not hear.

Indeed, I am about to raise up a shepherd in the land who will not take heed to the sheep headed to slaughter, will not seek the scattered, and will not heal the injured. Moreover, he will not nourish the one that is healthy but instead will eat the meat of the fat sheep and tear off their hooves.