What does Exodus 3:17 mean?

'Tell them, "I promise to bring you up out of your misery in Egypt into the land of the Canaanites, Hittites, Amorites, Perizzites, Hivites, and Jebusites—a land flowing with milk and honey."' Exodus 3:17 - Modern Text Bible

(God repeats His promise of deliverance and abundance, making it clear this is a definite commitment.)