Numbers 21:14

‘Arise, set out, and pass through the valley of Arnon. Look! I have given Sihon the Amorite, king of Heshbon, and his land into your hand; begin to take possession and provoke him to battle.

Then Saul said to David, “Here is my older daughter Merab; I will give her to you as a wife; only be a man of valor for me and fight Yahweh’s battles.” For Saul thought, “My hand shall not be against him, but let the hand of the Philistines be against him.”

Then, like fleeing birds or scattered nestlings, The daughters of Moab will be at the fords of the Arnon.