Leviticus 23:5-7

⁵In the first moneth, and in the fourteenth day of the moneth at euening shalbe ye Passeouer of the Lord.

⁶And on the fifteenth day of this moneth shalbe the feast of vnleauened bread vnto the Lord: seuen dayes ye shall eate vnleauened bread.

⁷In the first day yee shall haue an holy conuocation: ye shall do no seruile worke therein.