Revelation 9:13

Then the sixth angel blew his trumpet, and I heard a voice from the corners of the altar of gold that was before God

Hebrews 9:24

For it was not a sanctuary made by human hands and only copied after the true one that Christ entered, but he went into heaven itself, in order to appear now on our behalf in the very presence of God.

Hebrews 10:21

and since in him we have a great priest set over the house of God,

Revelation 8:3-5

Then another angel with a gold censer came and stood at the altar, and he was given a great quantity of incense so that he might mingle it with the prayers of all the saints on the altar of gold that stood before the throne.

Revelation 9:1

Then the fifth angel blew his trumpet, and I saw a star that had fallen on the earth from the sky. He was given the key to the pit of the abyss,

Treasury of Scripture Knowledge

Summary

And the sixth angel sounded, and I heard a voice from the four horns of the golden altar which is before God,

The sixth

Bible References

The sixth

Revelation 9:1
Then the fifth angel blew his trumpet, and I saw a star that had fallen on the earth from the sky. He was given the key to the pit of the abyss,

A voice

Revelation 8:3
Then another angel with a gold censer came and stood at the altar, and he was given a great quantity of incense so that he might mingle it with the prayers of all the saints on the altar of gold that stood before the throne.
Hebrews 9:24
For it was not a sanctuary made by human hands and only copied after the true one that Christ entered, but he went into heaven itself, in order to appear now on our behalf in the very presence of God.
Hebrews 10:21
and since in him we have a great priest set over the house of God,