'Heed' in the Bible

and thou shalt say unto him, Take heed and be quiet; fear not, and let not thy heart faint before these two ends of smoking firebrands, because of the fierce anger of Rezin and Syria, and of the son of Remaliah.

And he saw chariots, horsemen by pairs, a chariot with asses, a chariot with camels; and he hearkened diligently with much heed.