Contradiction with Matthew 5:44
This verse encourages loving and doing good to enemies, which contradicts the actions of exclusion in 1 Samuel 30:21.
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 Galatians 6:2
This verse urges bearing one another's burdens, whereas 1 Samuel 30:21 shows a lack of support for certain men.
Galatians 6:2: Bear ye one another's burdens, and so fulfil the law of Christ.
Contradiction with Philippians 2:4
It promotes looking out for the interests of others, contrary to the self-centered attitude shown in 1 Samuel 30:21.
Philippians 2:4: Look not every man on his own things, but every man also on the things of others.
Contradiction with Romans 14:19
Advocates for peace and mutual edification, conflicting with the division seen in 1 Samuel 30:21.
Romans 14:19: Let us therefore follow after the things which make for peace, and things wherewith one may edify another.
Contradiction with Luke 6:31
The command to do unto others as you would have them do unto you contrasts with the exclusion seen in 1 Samuel 30:21.
Luke 6:31: And as ye would that men should do to you, do ye also to them likewise.