Contradiction with Psalm 34:17
While Jeremiah 8:18 conveys pervasive grief and lack of comfort, Psalm 34:17 promises that the righteous cry out and the Lord hears and delivers them from all their troubles, suggesting comfort and aid from God.
Psalm 34:17: [The righteous] cry, and the LORD heareth, and delivereth them out of all their troubles.
Contradiction with 1 Peter 5:7
Jeremiah 8:18 shows an overwhelming sorrow with no apparent relief, whereas 1 Peter 5:7 encourages casting all anxieties on God because He cares for you, implying comfort and relief.
1 Peter 5:7: Casting all your care upon him; for he careth for you.
Contradiction with Matthew 5:4
Jeremiah 8:18 speaks to unrelieved mourning, whereas Matthew 5:4 promises comfort to those who mourn, suggesting a contradiction in the availability of solace.
Matthew 5:4: Blessed [are] they that mourn: for they shall be comforted.
Contradiction with Isaiah 41:10
In contrast to the overwhelming sorrow in Jeremiah 8:18, Isaiah 41:10 reassures believers to not fear or be dismayed because God is with them, offering strength and help.
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.