Contradiction with Proverbs 3:5
Contradicts by advising trust in the Lord exclusively, whereas Hebrews 2:13 includes trust in both God and human representatives.
Proverbs 3:5: Trust in the LORD with all thine heart; and lean not unto thine own understanding.
Contradiction with Jeremiah 17:5
Contradicts by condemning trust in man, while Hebrews 2:13 includes trusting in human agents of God.
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 Isaiah 2:22
Warns against relying on humans, conflicting with Hebrews 2:13's inclusion of trust in human figures along with God.
Isaiah 2:22: Cease ye from man, whose breath [is] in his nostrils: for wherein is he to be accounted of?