{6} And I heard another out of the altar say, Even so, Lord God Almighty, true and righteous are thy judgments.

(6) A confirmation of the praise before going out of the sanctuary of God, whether immediately by Christ, or by some one of his angels, for Christ also is called another angel; Re 3:8,7:2,12:1

People's New Testament

16:4-7 THE THIRD VIAL.

And the third angel poured out his vial. John sees the third vial poured upon the rivers and fountain of waters; and they become blood.

Wesley's Notes

16:7 Yea - Answering the angel of the waters, and affirming of God's judgments in general, what he had said of one particular judgment.

Jamieson-Fausset-Brown Bible Commentary

7. another out of-omitted in A, C, Syriac, and Coptic. Translate then, "I heard the altar [personified] saying." On it the prayers of saints are presented before God: beneath it are the souls of the martyrs crying for vengeance on the foes of God.

Matthew Henry's Concise Commentary

16:1-7 We are to pray that the will of God may be done on earth as it is done in heaven. Here is a succession of terrible judgments of Providence; and there seems to be an allusion to several of the plagues of Egypt. The sins were alike, and so were the punishments. The vials refer to the seven trumpets, which represented the rise of antichrist; and the fall of the enemies of the church shall bear some resemblance to their rise. All things throughout their earth, their air, their sea, their rivers, their cities, all are condemned to ruin, all accursed for the wickedness of that people. No wonder that angels, who witness or execute the Divine vengeance on the obstinate haters of God, of Christ, and of holiness, praise his justice and truth; and adore his awful judgments, when he brings upon cruel persecutors the tortures they made his saints and prophets suffer.