Trust in the LORD with all thine heart; and lean not unto thine own understanding.
– Proverbs 3:5
Trust and lean both point to being fully supported. It indicates a full reliance and not just a little help or aid. Our full reliance and full confidence is to be in the Lord and his wisdom. Solomon warns that we have a natural inclination and tendency (Proverbs 14:12; 16:25), but we are to abandon that for the heavenly wisdom. Paul speaks similarly that the natural mind has a bent and needs to be renewed (Ephesians 4:23; Colossians 3:10; Romans 12:2).