Revelation 6:9

And when he had opened the fifth seal, I saw, under the altar, the souls of those who had been slain because of the Word of God and because of the testimony that they held

Other versions

King James Version

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:

English Standard Version

When he opened the fifth seal, I saw under the altar the souls of those who had been slain for the word of God and for the witness they had borne.

New International Version

When he opened the fifth seal, I saw under the altar the souls of those who had been slain because of the word of God and the testimony they had maintained.