The Passover: a requirement for Hebrews and an option for the foreigner that lives with them. But what happens if you are not ritually clean by the time Passover comes around? What if you touched a dead body (a big problem that will come up in just a few chapters) or were traveling? Moses puts this question to the Lord and the Lord tells Him to do it again: same time only a month later.
The focus here is inclusion; everyone should participate. Everyone that observes the Passover is affected by what the Lord did in Egypt that night. Everyone should remember. For us, we not only reflect upon the Egyptian Passover, but we reflect on God's ultimate saving act: the cross. That is the crucial element for having the Lord's Supper – we remember together what the Lord has done for us.
