Numbers 9:1-3

It is very worthy observation, that this precept for the commemoration of the passover, and most probably, the same day in the year after the Israelites deliverance from Egypt, was by the express commandment of GOD. For if the Reader will consult Exodus 12:25, he will there find, that the precept for the perpetual observance of the passover, was not enjoined until the people were come into the land of promise. And it is likely I think, as the scripture is silent upon this head, that the children of Israel, did not again observe the passover, until they came into Canaan, see Joshua 5:7. But Reader! do not pass over those verses, without taking with thee into view, the reference made herein to Him, whom the Apostle calls our Passover. Behold with an eye to him, our observance is perpetual. 1 Corinthians 5:7.