Contradiction with Psalm 27:1
This verse expresses David's confidence in God's protection, stating "The LORD is my light and my salvation; whom shall I fear? the LORD is the strength of my life; of whom shall I be afraid?" which contradicts his fear and flight in 2 Samuel 15:14.
Psalm 27:1: [[A Psalm] of David.] The LORD [is] my light and my salvation; whom shall I fear? the LORD [is] the strength of my life; of whom shall I be afraid?
Contradiction with Psalm 46:1-2
This passage speaks of God as a refuge and strength, a very present help in trouble, therefore not fearing, even if the earth is removed, contradicting David's decision to flee in fear.
Psalm 46:1-2: [To the chief Musician for the sons of Korah, A Song upon Alamoth.] God [is] our refuge and strength, a very present help in trouble. [for: or, of]
Contradiction with 2 Chronicles 20:17
This verse instructs to "stand still, and see the salvation of the LORD" in the face of battle, contradicting David's choice to flee instead of standing firm.
2 Chronicles 20:17: Ye shall not [need] to fight in this [battle]: set yourselves, stand ye [still], and see the salvation of the LORD with you, O Judah and Jerusalem: fear not, nor be dismayed; to morrow go out against them: for the LORD [will be] with you.
Contradiction with Isaiah 41:10
This verse encourages, "Fear thou not; for I am with thee: be not dismayed; for I am thy God," which contradicts the fear-driven reaction of David in 2 Samuel 15:14.
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.