Contradiction with John 18:36
Judges 3:23 describes a violent act, whereas John 18:36 depicts Jesus' kingdom as not being of this world and avoiding earthly battles.
John 18:36: Jesus answered, My kingdom is not of this world: if my kingdom were of this world, then would my servants fight, that I should not be delivered to the Jews: but now is my kingdom not from hence.
Contradiction with Matthew 5:39
Judges 3:23 involves a secretive act of aggression, which contradicts Jesus' teaching of turning the other cheek.
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
Judges 3:23 involves personal vengeance while this verse admonishes leaving vengeance to God.
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.
Contradiction with Exodus 20:13
Judges 3:23 involves killing, which is directly prohibited in the commandment not to kill.
Exodus 20:13: Thou shalt not kill.
Contradiction with Matthew 26:52
Judges 3:23 includes an act of violence contrasted with Matthew's admonition against living by the sword.
Matthew 26:52: Thinkest thou that I cannot now pray to my Father, and he shall presently give me more than twelve legions of angels?