Contradiction with 1 Kings 9:6-7
These verses mention that if the Israelites turn away from God, they will be cut off from the land, which contradicts Isaiah 49:18's promise of abundance and gathering.
1 Kings 9:6-7: [But] if ye shall at all turn from following me, ye or your children, and will not keep my commandments [and] my statutes which I have set before you, but go and serve other gods, and worship them:
Contradiction with Jeremiah 12:7
This verse speaks of God forsaking His house and inheritance, which is counter to Isaiah 49:18's image of restoration and adornment.
Jeremiah 12:7: I have forsaken mine house, I have left mine heritage; I have given the dearly beloved of my soul into the hand of her enemies. [the dearly...: Heb. the love]
Contradiction with Ezekiel 33:28
Here, the land is described as desolate due to the people's iniquity, contrary to Isaiah 49:18's vision of a prosperous gathering.
Ezekiel 33:28: For I will lay the land most desolate, and the pomp of her strength shall cease; and the mountains of Israel shall be desolate, that none shall pass through. [most...: Heb. desolation and desolation]
Contradiction with Hosea 1:9
In this verse, God declares the people are not His, conflicting with Isaiah 49:18's depiction of a close, prosperous relationship between God and His people.
Hosea 1:9: Then said [God], Call his name Loammi: for ye [are] not my people, and I will not be your [God]. [Loammi: that is, Not my people]