Exodus 12:37-41

12:37 The Israelites journeyed from Rameses to Sukkoth. There were about 600,000 men on foot, plus their dependants. 12:38 A mixed multitude also went up with them, and flocks and herds – a very large number of cattle. 12:39 They baked cakes of bread without yeast using the dough they had brought from Egypt, for it was made without yeast – because they were thrust out of Egypt and were not able to delay, they could not prepare food for themselves either.

12:40 Now the length of time the Israelites lived in Egypt was 430 years. 12:41 At the end of the 430 years, on the very day, all the regiments of the Lord went out of the land of Egypt.