Contradiction with Jeremiah 17:5
This verse contradicts Isaiah 10:20 by expressing a curse on those who trust in man, whereas Isaiah 10:20 emphasizes reliance on God rather than people.
Jeremiah 17:5: Thus saith the LORD; Cursed [be] the man that trusteth in man, and maketh flesh his arm, and whose heart departeth from the LORD.
Contradiction with Proverbs 3:5
This verse underscores complete trust in the Lord without leaning on one's understanding, contrasting with any notion of supporting oneself or others seen in Isaiah 10:20.
Proverbs 3:5: Trust in the LORD with all thine heart; and lean not unto thine own understanding.