“Thou shalt eat no leauened bread with it: seuen dayes shalt thou eat vnleauened bread therewith, euen the bread of affliction, (for thou camest forth out of the land of Egypt in haste) that thou mayest remember the day when thou camest foorth out of the land of Egypt, all the dayes of thy life.”
1611 King James Version (KJV)
16:3 With it - Or, in it, that is, during the time of the feast of the passover. Bread of affliction - Bread which is not usual nor pleasant, to put thee in mind both of thy miseries endured in Egypt; and of thy hasty coming out of it, which allowed thee no time to leaven or prepare thy bread.