Leviticus 16:19

“And he shall sprinkle of the blood upon it with his finger seven times, etc.] This was done with his right finger, or forefinger, as the Targum of Jonathan, and seven times, to denote the perfect cleansing of the altar with it. Jarchi observes, that after he, the high priest, had put the puttings (of blood) upon the horns of it, he sprinkled of it seven sprinklings on the top of it: the Misnah says f570, upon the pure place of it, that is, upon a place of it, from whence the coals and ashes were removed, and where the gold appeared: and cleanse it, and hallow it from the uncleanness of the children of Israel; by sprinkling the blood upon it; Jarchi’s note is, “and cleanse it” from what was…”

“It is important, in reference to the meaning of the day of atonement, to observe the order of the rites as they are described in these verses. Leviticus 16:12 A censer - See Exodus 25:38 note. The altar before the Lord - i. e. the altar of burnt-offering on which the fire was always burning. Leviticus 16:14 The high priest must have come out from the most holy place to fetch the blood, leaving the censer smoking within, and then have entered again within the veil. He sprinkled the blood seven times upon the mercy-seat, on its east side (not “eastward”), and then seven times upon the floor in front of it. If the mercy-seat may be regarded as an altar, the holiest one of the three, on this one…”

“Seven times - To signify its perfect cleansing, (seven being a number of perfection) and our perfect reconciliation by the blood of Christ. Leviticus 16:21”

“Eze 43:18-22; Zac 13:1 Leviticus 16:20”