Exodus 13:6

6 Six days ye shall eat unleavened bread, and on the seventh day is a feast to the Lord.

Exodus 13:6 In-Context

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.
7 Seven days shall ye eat unleavened bread; nothing leavened shall be seen with thee, neither shalt thou have leaven in all thy borders.
8 And thou shalt tell thy son in that day, saying, Therefore the Lord dealt thus with me, as I was going out of Egypt.

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