God said:
Ex 3:19-22
19 "I know that the king of Egypt won't let you go unless forced to, 20 so I'll intervene and hit Egypt where it hurts — oh, my miracles will send them reeling! — after which they'll be glad to send you off. 21 I'll see to it that this people get a hearty send-off by the Egyptians — when you leave, you won't leave empty-handed! 22 Each woman will ask her neighbor and any guests in her house for objects of silver and gold, for jewelry and extra clothes; you'll put them on your sons and daughters. Oh, you'll clean the Egyptians out!"

And this happened!