Exodus 13:1-6

1 And the Lord spoke to Moses, saying,
2 Sanctify to me every first-born, first produced, opening every womb among the children of Israel both of man and beast: it is mine.
3 And Moses said to the people, Remember this day, in which ye came forth out of the land of Egypt, out of the house of bondage, for with a strong hand the Lord brought you forth thence; and leaven shall not be eaten.
4 For on this day ye go forth in the month of new .
5 And it shall come to pass when the Lord thy God shall have brought thee into the land of the Chananites, and the Chettites, and Amorites, and Evites, and Jebusites, and Gergesites, and Pherezites, which he sware to thy fathers to give thee, a land flowing with milk and honey, that thou shalt perform this service in this month.
6 Six days ye shall eat unleavened bread, and on the seventh day is a feast to the Lord.

The Brenton translation of the Septuagint is in the public domain.