A. 1 And the LORD spake unto Moses, saying, 2 Speak unto the children of Israel, and say unto them, Concerning the feasts of the LORD, which ye shall proclaim to be holy convocations, even these are my feasts.
B. 3 Six days shall work be done:
C. but the seventh day is the SABBATH of rest,
D. an holy convocation;
B’. ye shall do no work therein:
C’. it is the SABBATH of the LORD in all your dwellings.
A’. 4 These are the feasts of the LORD, even holy convocations, which ye shall proclaim in their seasons.
5 In the fourteenth day of the first month at even is the LORD ‘s passover.
6 And on the fifteenth day of the same month is the feast of unleavened bread unto the LORD:
2A. seven days ye must eat unleavened bread.
2B. 7 In the first day ye shall have an holy convocation:
2C. ye shall do no servile work therein.
2A’. 8 But ye shall offer an offering made by fire unto the LORD seven days:
2B’. in the seventh day is an holy convocation:
2C’. ye shall do no servile work therein.
Note: the first feast is sabbath and the sabbath pattern shapes the detail of the feast of unleavened bread as well.