Exodus 27:2

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

Exodus 38:2

38:2 He made its horns on its four corners; its horns were part of it, and he overlaid it with bronze.

Exodus 30:2-3

30:2 Its length is to be a foot and a half and its width a foot and a half; it will be square. Its height is to be three feet, with its horns of one piece with it. 30:3 You are to overlay it with pure gold – its top, its four walls, and its horns – and make a surrounding border of gold for it.

Exodus 30:10

30:10 Aaron is to make atonement on its horns once in the year with some of the blood of the sin offering for atonement; once in the year he is to make atonement on it throughout your generations. It is most holy to the Lord.”

Exodus 37:25-26

The Making of the Altar of Incense

37:25 He made the incense altar of acacia wood. Its length was a foot and a half and its width a foot and a half – a square – and its height was three feet. Its horns were of one piece with it. 37:26 He overlaid it with pure gold – its top, its four walls, and its horns – and he made a surrounding border of gold for it.