Through faith he kept the passover
Which Moses made, or appointed by divine direction; he kept it, with all its rites and ceremonies, and caused the people of Israel to observe it; and which he did, in faith of the speedy deliverance of the children of Israel, from the house of bondage; and in the faith of the Messiah, of whom the passover was a type; (See Gill on 1 Corinthians 5:7). The Syriac version reads, "through faith they kept the passover"; that is, the Israelites:
and the sprinkling of blood;
of the paschal lamb; which was received into a basin, and was sprinkled upon the lintel, and two side posts of the doors of the houses, in which the Israelites dwelt; which was done with a bunch of hyssop dipped into it:
lest he that destroyed the firstborn should touch
for the Lord, seeing the blood sprinkled, as above, when he smote the firstborn of Egypt, passed by the houses of the Israelites, so distinguished; and they were all safe within, and not one of them touched: this was typical of the blood of Christ being sprinkled upon the hearts and consciences of his people; whereby they are purified through faith; which blood is looked upon by Jehovah, so that justice passes by them; and they are all safe and secure, and will be, when others are destroyed; nor can they be hurt by the second death.