Contradiction with 2 Corinthians 4:8
This verse is complementary to 2 Corinthians 4:9 rather than contradictory.
2 Corinthians 4:8: [We are] troubled on every side, yet not distressed; [we are] perplexed, but not in despair; [in despair: or, altogether without help, or, means]
Contradiction with Psalm 22:1
This verse expresses a feeling of abandonment, in contrast to 2 Corinthians 4:9, which emphasizes not being forsaken.
Psalm 22:1: [To the chief Musician upon Aijeleth Shahar, A Psalm of David.] My God, my God, why hast thou forsaken me? [why art thou so] far from helping me, [and from] the words of my roaring? [Aijeleth...: or, the hind of the morning] [helping...: Heb. my salvation]
Contradiction with Isaiah 49:14
Zion laments being forsaken by the Lord, contradicting with the assurance given in 2 Corinthians 4:9.
Isaiah 49:14: But Zion said, The LORD hath forsaken me, and my Lord hath forgotten me.
Contradiction with Matthew 27:46
Jesus' cry of abandonment on the cross presents a contrast to the theme of not being forsaken in 2 Corinthians 4:9.
Matthew 27:46: And about the ninth hour Jesus cried with a loud voice, saying, Eli, Eli, lama sabachthani? that is to say, My God, my God, why hast thou forsaken me?
Contradiction with Psalm 88:14
The psalmist feels forsaken by God, which is in opposition to the message in 2 Corinthians 4:9 of not being forsaken.
Psalm 88:14: LORD, why castest thou off my soul? [why] hidest thou thy face from me?