And when he had opened the fifth seal, I saw under the altar the souls of those that had been slain because of 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 of the prayers of all the saints, that he should offer 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 thy sharp sickle and gather the clusters of the earth; for her grapes are fully ripe.

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

And he spoke to the man clothed with linen and said, Go in between the wheels under the cherubim and fill thine 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 slave of God, and the song of the Lamb, saying, Great and marvellous are thy works, Lord God Almighty; just and true are thy ways, thou 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 without mixture 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 whore, who corrupted the earth with her fornication, and has avenged the blood of his slaves at her hand.

General references

TZADDI. Righteous art thou, O LORD, and upright are thy judgments.