'Intentions' in the Bible

Fools make fun of guilt, but among the upright there are good intentions.

The intentions of the heart belong to a man, but the answer of the tongue comes from the Lord.

Everything a person does seems pure in his own opinion, but the LORD weighs intentions.

The intentions of a person's heart are deep waters, but a discerning person reveals them.

Who can say, "My intentions are pure; I am clean from any sin?"