Contradiction with Exodus 14:14
"The LORD shall fight for you, and ye shall hold your peace." - Contradicts 1 Samuel 17:30 by emphasizing God's role in battles, whereas David actively seeks to face Goliath.
Exodus 14:14: The LORD shall fight for you, and ye shall hold your peace.
Contradiction with 2 Chronicles 20:15
"for the battle is not yours, but God's." - Contradicts 1 Samuel 17:30 as it suggests that battles are fought by God, but David is taking initiative in this battle.
2 Chronicles 20:15: And he said, Hearken ye, all Judah, and ye inhabitants of Jerusalem, and thou king Jehoshaphat, Thus saith the LORD unto you, Be not afraid nor dismayed by reason of this great multitude; for the battle [is] not yours, but God's.
Contradiction with Matthew 5:39
"But I say unto you, That ye resist not evil:" - Contradicts 1 Samuel 17:30 as it advocates non-resistance to evil, whereas David willingly engages in confrontation.
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
"avenge not yourselves, but rather give place unto wrath:" - Contradicts 1 Samuel 17:30 as it advises against personal retribution, but David is ready to fight Goliath.
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.