Contradiction with Psalm 23:4
While Jeremiah 38:15 shows Jeremiah's fear of being killed if he tells the truth, Psalm 23:4 expresses fearlessness even in the valley of the shadow of death, due to God's presence and comfort.
Psalm 23:4: Yea, though I walk through the valley of the shadow of death, I will fear no evil: for thou [art] with me; thy rod and thy staff they comfort me.
Contradiction with Isaiah 41:10
Jeremiah expresses fear of consequences for speaking truth, but Isaiah 41:10 reassures one not to fear, for God is with them.
Isaiah 41:10: Fear thou not; for I [am] with thee: be not dismayed; for I [am] thy God: I will strengthen thee; yea, I will help thee; yea, I will uphold thee with the right hand of my righteousness.
Contradiction with Proverbs 29:25
Jeremiah is afraid of the people, whereas Proverbs emphasizes that whoever trusts in the Lord shall be safe, contrasting reliance on God versus fear of man.
Proverbs 29:25: The fear of man bringeth a snare: but whoso putteth his trust in the LORD shall be safe. [safe: Heb. set on high]
Contradiction with Matthew 10:28
Jeremiah fears mortal harm, but Matthew advises not to fear those who can only kill the body, suggesting a focus on spiritual rather than physical fear.
Matthew 10:28: And fear not them which kill the body, but are not able to kill the soul: but rather fear him which is able to destroy both soul and body in hell.