the blood

Leviticus 8:15
Moses slaughtered the bull, took some of the blood, and applied it with his finger to all four horns of the altar, purifying the altar. He poured out the rest of the blood at the base of the altar and consecrated it so that atonement could be made on it.

Leviticus 9:9
The sons of Aaron brought the blood to him, and he dipped his finger in the blood and applied it to the horns of the altar. And he poured out the rest of the blood at the base of the altar.

Leviticus 16:14, 18, 19
And he is to take some of the bull's blood and sprinkle it with his finger on the east side of the mercy seat; then he shall sprinkle some of it with his finger seven times before the mercy seat. . . .

Hebrews 9:13, 14, 22
For if the blood of goats and bulls and the ashes of a heifer sprinkled on those who are ceremonially unclean sanctify them so that their bodies are clean, . . .

Hebrews 10:4
because it is impossible for the blood of bulls and of goats to take away sins.

the horns

Exodus 27:2
Make a horn on each of its four corners, so that the horns are of one piece, and overlay it with bronze.

Exodus 30:2
It is to be square, a cubit long, a cubit wide, and two cubits high. Its horns must be of one piece.

Exodus 38:2
He made a horn at each of its four corners, so that the horns and altar were of one piece, and he overlaid the altar with bronze.

pour all

Leviticus 4:7, 18, 25, 30, 34
The priest must then apply some of the blood to the horns of the altar of fragrant incense that is before the LORD in the Tent of Meeting. And he is to pour out the rest of the bull's blood at the base of the altar of burnt offering at the entrance to the Tent of Meeting. . . .

Leviticus 5:9
then he is to sprinkle some of the blood of the sin offering on the side of the altar, while the rest of the blood is drained out at the base of the altar. It is a sin offering.

Leviticus 9:9
The sons of Aaron brought the blood to him, and he dipped his finger in the blood and applied it to the horns of the altar. And he poured out the rest of the blood at the base of the altar.