Exodus 13:3

And Moses said unto the people, Remember this day, in which ye came out from Egypt, out of the house of bondage. The Lord here repeats His ordinance respecting the Feast of Unleavened Bread with impressive solemnity, His name for Egypt being "house of slaves"; for that was the relation in which they had stood to Pharaoh and to all the Egyptians, that of practical slavery. For by strength of hand the Lord brought you out from this place. The expression is more emphatic than the usual "by a strong hand. " There shall no leavened bread be eaten, not only during the present days, but also at every anniversary of the occasion.