Before the execution of this sentence the Lord through Moses gave direction to the children of Israel concerning their departure from Egypt, and especially for their preservation from the coming judgment. Each family, alone or in connection with others, was to slay a lamb or a kid “without blemish,”(Exodus 12:5) and with a bunch of hyssop sprinkle its blood on “the two side posts and on the upper doorpost”(Exodus 12:7) of the house, that the destroying angel, coming at midnight, might not enter that dwelling. They were to eat the flesh roasted, with unleavened bread and bitter herbs, at night, as Moses said, “with your loins girded, your shoes on your feet, and your staff in your hand; and ye shall eat it in haste: it is the Lord’s Passover.” Exodus 12:11. (PP 274.1) MC VC

The Lord declared: “I will pass through the land of Egypt this night, and will smite all the first-born in the land of Egypt, both man and beast; and against all the gods of Egypt I will execute judgment.... And the blood shall be to you for a token upon the houses where ye are: and when I see the blood, I will pass over you, and the plague shall not be upon you to destroy you, when I smite the land of Egypt.” Exodus 12:12, 13. (PP 274.2) MC VC

In commemoration of this great deliverance a feast was to be observed yearly by the people of Israel in all future generations. “This day shall be unto you for a memorial; and ye shall keep it a feast to the Lord throughout your generations: ye shall keep it a feast by an ordinance forever.” Exodus 12:14. As they should keep the feast in future years, they were to repeat to their children the story of this great deliverance, as Moses bade them: “Ye shall say, It is the sacrifice of the Lord’s Passover, who passed over the houses of the children of Israel in Egypt, when He smote the Egyptians, and delivered our houses.” Exodus 12:27. (PP 274.3) MC VC

Furthermore, the first-born of both man and beast were to be the Lord’s, to be bought back only by a ransom, in acknowledgment that when the first-born in Egypt perished, that of Israel, though graciously preserved, had been justly exposed to the same doom but for the atoning sacrifice. “All the first-born are Mine,” the Lord declared; “for on the day that I smote all the first-born in the land of Egypt, I hallowed unto Me all the first-born in Israel, both man and beast: Mine they shall be,” Numbers 3:13. After the institution of the tabernacle service the Lord chose unto Himself the tribe of Levi for the work of the sanctuary, instead of the first-born of the people. “They are wholly given unto Me from among the children of Israel,” He said. “Instead of the first-born of all the children of Israel, have I taken them unto Me.” Numbers 8:16. All the people were, however, still required, in acknowledgment of God’s mercy, to pay a redemption price for the first-born son. Numbers 18:15, 16. (PP 274.4) MC VC