And when he had opened the fifth seal, I saw under the altar the souls of them that were slain for the word of God, and for the testimony which they held:

And another angel came and stood at the altar, having a golden censer; and there was given unto him much incense, that he should offer it with the prayers of all saints upon the golden altar which was before the throne.

And another angel came out from the altar, who had power over fire; and cried with a loud cry to him that had the sharp sickle, saying, Thrust in your sharp sickle, and gather the clusters of the vine of the earth; for her grapes are fully ripe.

Then flew one of the seraphim unto me, having a live coal in his hand, which he had taken with the tongs from off the altar:

And he spoke unto the man clothed with linen, and said, Go in between the wheels, even under the cherub, and fill your hand with coals of fire from between the cherubim, and scatter them over the city. And he went in in my sight.

Even

And they sing the song of Moses the servant of God, and the song of the Lamb, saying, Great and marvelous are your works, Lord God Almighty; just and true are your ways, you King of saints.

True

He that leads into captivity shall go into captivity: he that kills with the sword must be killed with the sword. Here is the patience and the faith of the saints.

The same shall drink of the wine of the wrath of God, which is poured out undiluted into the cup of his indignation; and he shall be tormented with fire and brimstone in the presence of the holy angels, and in the presence of the Lamb:

For true and righteous are his judgments: for he has judged the great harlot, who did corrupt the earth with her fornication, and has avenged the blood of his servants at her hand.

General references

[Tsadde] Righteous are you, O LORD, and upright are your judgments.