Revelation 9:13
And the sixth angel sounded his trumpet: and I heard a voice from the four horns of the golden altar which is before God,
Exodus 30:2-3
a cubit the length thereof, and a cubit the breadth thereof square shall it be; and two cubits its height; of itself shall be its horns.
Hebrews 9:24
For the Christ is not entered into holy places made with hand, figures of the true, but into heaven itself, now to appear before the face of God for us:
Hebrews 10:21
and having a great priest over the house of God,
Revelation 8:3-5
And another angel came and stood at the altar, having a golden censer; and much incense was given to him, that he might give efficacy to the prayers of all saints at the golden altar which was before the throne.
Revelation 9:1
And the fifth angel sounded his trumpet: and I saw a star out of the heaven fallen to the earth; and there was given to it the key of the pit of the abyss.