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International Standard Bible Encyclopedia 1915
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 (Ps 90:12 the King James Version); instruction (Pr 23:12); understanding (Pr 2:2); knowledge (Pr 22:17).