'Hearken' in the Bible

saying, “If you will diligently listen and pay attention to the voice of the Lord your God, and do what is right in His sight, and listen to His commandments, and keep [foremost in your thoughts and actively obey] all His precepts and statutes, then I will not put on you any of the diseases which I have put on the Egyptians; for I am the Lord who heals you.”