5 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.
6 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, ).

In other versions

And you shall make horns for it on its four corners; its horns shall be of one piece with it, and you shall overlay it with bronze.

Make a horn at each of the four corners, so that the horns and the altar are of one piece, and overlay the altar with bronze.

Make horns for it on its four corners; the horns are to be of one piece. Overlay it with bronze.

Make horns for each of its four corners so that the horns and altar are all one piece. Overlay the altar with bronze.

And you will make its horns on its four corners; its horns will be of one piece with it, and you will overlay it with bronze.

And thou shalt make the horns of it upon the four corners thereof: his horns shall be of the same: and thou shalt overlay it with brass.

Public Domain