Contradiction with 1 Samuel 17:49
This verse describes David defeating the Philistines with God's help, while 2 Samuel 23:11 highlights the bravery of Shammah alone.
1 Samuel 17:49: And David put his hand in his bag, and took thence a stone, and slang [it], and smote the Philistine in his forehead, that the stone sunk into his forehead; and he fell upon his face to the earth.
Contradiction with Exodus 14:14
This verse portrays God fighting for the Israelites, contrasting the personal bravery of Shammah in 2 Samuel 23:11.
Exodus 14:14: The LORD shall fight for you, and ye shall hold your peace.
Contradiction with Matthew 5:39
Here, turning the other cheek is advised, which contradicts Shammah's aggressive stand against the Philistines in 2 Samuel 23:11.
Matthew 5:39: But I say unto you, That ye resist not evil: but whosoever shall smite thee on thy right cheek, turn to him the other also.
Contradiction with Romans 12:19
Urges believers to leave vengeance to God, opposing the personal combat depicted in 2 Samuel 23:11.
Romans 12:19: Dearly beloved, avenge not yourselves, but [rather] give place unto wrath: for it is written, Vengeance [is] mine; I will repay, saith the Lord.