'Humble' in the Bible

if my people, who are called by my name, shall humble themselves, and pray, and seek my face, and turn from their wicked ways; then will I hear from heaven, and will forgive their sin, and will heal their land.

He didn't humble himself before Yahweh, as Manasseh his father had humbled himself; but this same Amon trespassed more and more.

and he did that which was evil in the sight of Yahweh his God; he didn't humble himself before Jeremiah the prophet [speaking] from the mouth of Yahweh.