Num 9:1-5
The Passover at Sinai, and Instructions for a Supplementary Passover. - Num 9:1-5. On the first institution of the Passover, before the Exodus from Egypt, God had appointed the observance of this feast as an everlasting statute for all future generations (Exo 12:13, Exo 12:24-25). In the first month of the second year after the Exodus, that is to say, immediately after the erection of the tabernacle (Exo 40:2, Exo 40:17), this command was renewed, and the people were commanded “to keep the Passover in its appointed season, according to all its statutes and rights;” not to postpone it, that is, according to an interpretation that might possibly have been put upon Exo 12:24-25, until they came to Canaan, but to keep it there at Sinai. And Israel kept it in the wilderness of Sinai, in exact accordance with the commands which God had given before (Ex 12). There is no express command, it is true, that the blood of the paschal lambs, instead of being smeared upon the lintel and posts of the house-doors (or the entrances to the tents), was to be sprinkled upon the altar of burnt-offering; nor is it recorded that this was actually done; but it followed of itself from the altered circumstances, inasmuch as there was not destroying angel to pass through the camp at Sinai and smite the enemies of Israel, whilst there was an altar in existence now upon which all the sacrificial blood was to be poured out, and therefore the blood of the paschal sacrifice also.