Knee - Vine's Expository Dictionary of New Testament Words
Knee
[ 1,,G1119, gonu ]a knee" (Latin, genu), is used
(a) metaphorically in Hebrews 12:12, where the duty enjoined is that of "courageous self-recovery in God's strength;"
(b) literally, of the attitude of a suppliant, Luke 5:8; Ephesians 3:14; of veneration, Romans 11:4; Romans 14:11; Philippians 2:10; in mockery, Mark 15:19. See KNEEL.