Contradiction with Matthew 11:28
Contradicts Isaiah 49:9 by suggesting that rest is offered by Jesus, while Isaiah 49:9 speaks of being brought out of darkness.
Matthew 11:28: Come unto me, all [ye] that labour and are heavy laden, and I will give you rest.
Contradiction with Jeremiah 6:16
Contradicts Isaiah 49:9 as it calls for standing and looking for the old paths, while Isaiah 49:9 focuses on freeing prisoners.
Jeremiah 6:16: Thus saith the LORD, Stand ye in the ways, and see, and ask for the old paths, where [is] the good way, and walk therein, and ye shall find rest for your souls. But they said, We will not walk [therein].
Contradiction with John 8:12
Contradicts Isaiah 49:9 by Jesus claiming to be the light of the world himself, instead of followers walking in light themselves.
John 8:12: Then spake Jesus again unto them, saying, I am the light of the world: he that followeth me shall not walk in darkness, but shall have the light of life.
Contradiction with Romans 6:18
Contradicts Isaiah 49:9 by discussing liberation through righteousness, differing from being freed from physical captivity.
Romans 6:18: Being then made free from sin, ye became the servants of righteousness.