Kutoka 12 : 14 Exodus chapter 12 verse 14

Na siku hii itakuwa ukumbusho kwenu, nanyi mtaifanya iwe sikukuu kwa Bwana; mtaifanya iwe sikukuu katika vizazi vyenu vyote, kwa amri ya milele
soma Mlango wa 12

This day shall be to you for a memorial, and you shall keep it a feast to Yahweh: throughout your generations you shall keep it a feast by an ordinance forever.