Contradiction with 1 Kings 9:3
Contradicts by showing God’s promise to have His eyes and heart on the Temple perpetually, suggesting a sense of permanence.
1 Kings 9:3: And the LORD said unto him, I have heard thy prayer and thy supplication, that thou hast made before me: I have hallowed this house, which thou hast built, to put my name there for ever; and mine eyes and mine heart shall be there perpetually.
Contradiction with Isaiah 2:2
This verse speaks of the mountain of the Lord's house being established, which contrasts the destruction mentioned in Luke 21:6.
Isaiah 2:2: And it shall come to pass in the last days, [that] the mountain of the LORD'S house shall be established in the top of the mountains, and shall be exalted above the hills; and all nations shall flow unto it. [established: or, prepared]
Contradiction with Jeremiah 31:40
Describes the holy places of the Lord enduring forever, which contradicts the temporary state of the temple suggested in Luke 21:6.
Jeremiah 31:40: And the whole valley of the dead bodies, and of the ashes, and all the fields unto the brook of Kidron, unto the corner of the horse gate toward the east, [shall be] holy unto the LORD; it shall not be plucked up, nor thrown down any more for ever.