'Diligently' in the Bible

And he said, If thou wilt diligently hearken to the voice of Jehovah thy God, and do what is right in his eyes, and incline thine ears to his commandments, and keep all his statutes, I will put none of the complaints upon thee that I have put upon the Egyptians; for I am Jehovah who healeth thee.

But if thou shalt diligently hearken unto his voice, and do all that I shall say, then I will be an enemy to thine enemies, and an adversary to thine adversaries.