E.12:17, Abrahamites have to honour the memory of Matzos for all generations, an ordinance to celebrate it for ever.
Deuteronomy 16:8, From 15th to 20th continue to eat The society must feast on Matzos for six days but on the 21st you shall hold 7th day is an ‘ăṣereṯ of HE WHO IS God, do no work.
