Contradiction with John 5:22
It states that the Father judges no one but has entrusted all judgment to the Son, while Matthew 12:18 highlights the Son's role in gentleness and not judgment.
John 5:22: For the Father judgeth no man, but hath committed all judgment unto the Son:
Contradiction with Matthew 20:28
States the Son of Man came to serve and give his life as a ransom, whereas Matthew 12:18 emphasizes his role in justice.
Matthew 20:28: Even as the Son of man came not to be ministered unto, but to minister, and to give his life a ransom for many.
Contradiction with Luke 12:51
Mentions bringing division rather than peace, which contrasts with Matthew 12:18's implication of justice and peace.
Luke 12:51: Suppose ye that I am come to give peace on earth? I tell you, Nay; but rather division:
Contradiction with John 12:47
Indicates Jesus did not come to judge the world, which can seem contrary to the reference to bring forth justice in Matthew 12:18.
John 12:47: And if any man hear my words, and believe not, I judge him not: for I came not to judge the world, but to save the world.