Luke 11:17
But he, knowing their thoughts, said unto them, Every kingdom divided against itself is brought to desolation; and a house divided against a house falleth.
Cross-reference
Luke 11:20 contrasts the divided kingdom with the arrival of God's kingdom by His finger — the positive counterpart.
2 Chronicles 10:16-19 recounts the kingdom splitting after Rehoboam — a historical example of a divided kingdom falling.
Isaiah 9:21 explicitly describes Ephraim and Manasseh fighting each other, exemplifying a divided kingdom's fall.
Isaiah 19:2 prophesies Egyptians fighting each other — brother against brother, a direct example of division leading to ruin.
In Matthew 9:4, Jesus similarly knows the thoughts of the scribes, showing his divine perception.
In Matthew 12:25, Jesus gives the same saying about a divided kingdom, almost verbatim.
In Mark 3:23-26, Jesus uses the same divided kingdom metaphor in response to the Beelzebul accusation.