Contradiction with Exodus 20:13
This verse commands "Thou shalt not kill," while Numbers 26:49 lists the descendants of Naphtali who were numbered for potential warfare.
Exodus 20:13: Thou shalt not kill.
Contradiction with Matthew 5:44
Here, Jesus teaches "Love your enemies," which contrasts with the context of preparing for military action in Numbers 26:49.
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 Isaiah 2:4
Isaiah speaks of beating swords into plowshares, advocating for peace, unlike the mobilization implied in Numbers 26:49.
Isaiah 2:4: And he shall judge among the nations, and shall rebuke many people: and they shall beat their swords into plowshares, and their spears into pruninghooks: nation shall not lift up sword against nation, neither shall they learn war any more. [pruninghooks: or, scythes]
Contradiction with Romans 12:19
This verse advises against seeking revenge, in contrast to the potential for conflict in the census context of Numbers 26:49.
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.