Contradiction with Matthew 10:34
While Isaiah 9:7 speaks of endless peace under the reign of the Messiah, Matthew 10:34 presents Jesus speaking of bringing a sword rather than peace.
Matthew 10:34: Think not that I am come to send peace on earth: I came not to send peace, but a sword.
Contradiction with Luke 12:51
Isaiah 9:7 describes a peaceful government, but Luke 12:51 suggests Jesus bringing division instead of peace.
Luke 12:51: Suppose ye that I am come to give peace on earth? I tell you, Nay; but rather division:
Contradiction with Jeremiah 6:14
This verse criticizes false prophets promising peace without addressing underlying issues, contrasting with the perfect peace promised in Isaiah 9:7.
Jeremiah 6:14: They have healed also the hurt [of the daughter] of my people slightly, saying, Peace, peace; when [there is] no peace. [hurt: Heb. bruise, or, breach]
Contradiction with Ezekiel 13:10
Ezekiel critiques declaring peace without divine truth, opposing the genuine peace of the Messianic kingdom in Isaiah 9:7.
Ezekiel 13:10: Because, even because they have seduced my people, saying, Peace; and [there was] no peace; and one built up a wall, and, lo, others daubed it with untempered [morter]: [a wall: or, a slight wall]
Contradiction with Micah 3:5
This verse condemns leaders who falsely declare peace when it's not true, unlike the true peace prophesied in Isaiah 9:7.
Micah 3:5: Thus saith the LORD concerning the prophets that make my people err, that bite with their teeth, and cry, Peace; and he that putteth not into their mouths, they even prepare war against him.