Exodus 27:2

27:2 You are to make its four horns ¹  on its four corners; its horns will be part of it, ²  and you are to overlay it with bronze.

Leviticus 4:7

4:7 The priest must put some of the blood on the horns of the altar of fragrant incense that is before the Lord in the Meeting Tent, and all the rest of the bull’s blood he must pour out at the base of the altar of burnt offering that is at the entrance of the Meeting Tent.

Leviticus 4:18

4:18 He must put some of the blood on the horns of the altar ³  which is before the Lord in the Meeting Tent, and all the rest of the blood he must pour out at the base of the altar of burnt offering that is at the entrance of the Meeting Tent.

Leviticus 4:25

4:25 Then the priest must take some of the blood of the sin offering with his finger and put it on the horns of the altar of burnt offering, and he must pour out the rest of its blood at the base of the altar of burnt offering.

[27:2]  ¹ sn The horns of the altar were indispensable – they were the most sacred part. Blood was put on them; fugitives could cling to them, and the priests would grab the horns of the little altar when making intercessory prayer. They signified power, as horns on an animal did in the wild (and so the word was used for kings as well). The horns may also represent the sacrificial animals killed on the altar.

[27:2]  ² sn The text, as before, uses the prepositional phrase “from it” or “part of it” to say that the horns will be part of the altar – of the same piece as the altar. They were not to be made separately and then attached, but made at the end of the boards used to build the altar (U. Cassuto, Exodus, 363).

[4:18]  ³ sn See v. 7, where this altar is identified as the altar of fragrant incense.