Apply a-pli': Purely an Old Testament term representing five Hebrew originals which signify respectively, "to enter," "to incline," "to give," "to go about," "to put or place," in each instance spoken of the heart in its attitude to wisdom (Psalms 90:12 the King James Version); instruction (Proverbs 23:12); understanding (Proverbs 2:2); knowledge (Proverbs 22:17).