It is better to trust in the Lord than to put confidence in princes. (Psalms 118:9)
It is better to trust in the Lord than to put confidence in man. (Psalms 118:8)
Is not wisdom found among the aged? Does not long life bring understanding? (Job 12:12)
Iron sharpeneth iron; so man sharpeneth the countenance of his friend.
Judge me, O Lord; for I have walked in mine integrity: I have trusted also in the Lord; therefore I shall not slide. (Psalms 26:1)
Whatever thy hand findest to do, do it with all thy heart.