Contradiction with 2 Samuel 7:15
God promises David that His mercy shall not depart from him as it did from Saul, suggesting a lasting dynasty, which contrasts with 1 Kings 21:22 where God threatens to cut off Ahab's line.
2 Samuel 7:15: But my mercy shall not depart away from him, as I took [it] from Saul, whom I put away before thee.
Contradiction with 1 Kings 11:36
God promises that David's line will always have a light in Jerusalem, suggesting permanence, contradicting the notion of destruction in 1 Kings 21:22.
1 Kings 11:36: And unto his son will I give one tribe, that David my servant may have a light alway before me in Jerusalem, the city which I have chosen me to put my name there. [light: Heb. lamp, or, candle]
Contradiction with 2 Kings 8:19
The Lord maintains the Davidic line for the sake of his servant David, which contrasts with the complete cut-off described in 1 Kings 21:22.
2 Kings 8:19: Yet the LORD would not destroy Judah for David his servant's sake, as he promised him to give him alway a light, [and] to his children. [light: Heb. candle, or, lamp]
Contradiction with 2 Chronicles 21:7
God preserves David's lineage because of the covenant, which opposes the annihilation outlined in 1 Kings 21:22.
2 Chronicles 21:7: Howbeit the LORD would not destroy the house of David, because of the covenant that he had made with David, and as he promised to give a light to him and to his sons for ever. [light: Heb. lamp, or, candle]
Contradiction with Psalm 89:34-37
God’s covenant with David is described as enduring forever, which contradicts the destruction promised to Ahab in 1 Kings 21:22.
Psalm 89:34-37: My covenant will I not break, nor alter the thing that is gone out of my lips.