Then they rose up early in the morning, and the sun was shining on the water; and the Moabites saw the water on the other side as red as blood.
2 Kings 3:22
Surrounding context
3:21 And when all the Moabites heard that the kings had come up to fight against them, all who were able to bear arms and older were gathered; and they stood at the border.
3:22 Then they rose up early in the morning, and the sun was shining on the water; and the Moabites saw the water on the other side as red as blood.
3:23 And they said, "This is blood; the kings have surely struck swords and have killed one another; now therefore, Moab, to the spoil!"