Contradiction with Proverbs 22:24
This verse advises against associating with angry people, while 1 Samuel 25:15 speaks kindly of David's men, implying a positive association with them despite potential conflicts preceding the event.
Proverbs 22:24: Make no friendship with an angry man; and with a furious man thou shalt not go:
Contradiction with Matthew 5:44
This verse teaches to love enemies and do good to them, whereas 1 Samuel 25:15 notes how David's men treated Nabal's shepherds well, reflecting deeds of kindness, aligning rather than contradicting with loving action to others.
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 Proverbs 25:21
Advises to feed your enemy if he is hungry, a contradiction in spirit as 1 Samuel 25:15 implies reciprocal kindness without the enemy aspect.
Proverbs 25:21: If thine enemy be hungry, give him bread to eat; and if he be thirsty, give him water to drink:
Contradiction with Exodus 20:17
Discusses not coveting your neighbor's possessions, while 1 Samuel 25:15 relates to protection of neighbor's property, seeming in alignment in terms of respect for others' possessions, yet contextual motives can diverge.
Exodus 20:17: Thou shalt not covet thy neighbour's house, thou shalt not covet thy neighbour's wife, nor his manservant, nor his maidservant, nor his ox, nor his ass, nor any thing that [is] thy neighbour's.