Pastor Ray Bentley points out, A song is sung in heaven during the Great Tribulation. This song that is sung in revelation 15 is a song just preceding the final seven bowl judgments that God will pour out upon the earth all the way through this time of tribulation. Voices from before the throne of God cry out, just and true are your ways, O King of saints, for you alone are Holy Spirit, who sings all of his people coming down before the King.