Contradiction with 2 Samuel 1:19
This verse speaks about the beauty of Israel being slain, which contrasts with the sense of victory and spoils of war being distributed in 1 Samuel 30:27.
2 Samuel 1:19: The beauty of Israel is slain upon thy high places: how are the mighty fallen!
Contradiction with Luke 6:29
This verse advises turning the other cheek and not resisting an evil person, contradicting the military and retaliatory actions described in 1 Samuel 30.
Luke 6:29: And unto him that smiteth thee on the [one] cheek offer also the other; and him that taketh away thy cloke forbid not [to take thy] coat also.
Contradiction with Matthew 5:44
This verse encourages loving your enemies and blessing those who curse you, which contrasts with the context of warfare and retribution in 1 Samuel 30:27.
Matthew 5:44: But I say unto you, Love your enemies, bless them that curse you, do good to them that hate you, and pray for them which despitefully use you, and persecute you;
Contradiction with Exodus 20:13
This commandment, "Thou shalt not kill," could be seen as contradicting the context of warfare and battles leading up to 1 Samuel 30:27.
Exodus 20:13: Thou shalt not kill.
Contradiction with Romans 12:19
Advises against taking revenge, which contrasts with the retaliatory actions of David and his men in 1 Samuel 30.
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.