And cried with a loud voice - Compare Zac 4:7. This is expressive of the greatness of their joy; the ardor and earnestness of their praise.
Salvation to our God - The word rendered "salvation" - σωτηρία sōtēria - means properly "safety, deliverance, preservation"; then welfare or prosperity; then victory; then, in a Christian sense, deliverance from punishment and admission to eternal life. Here the idea seems to be that their deliverance from sin, danger, persecution, and death, was to be ascribed solely to God. It cannot be meant, as the words would seem to imply, that they desired that God might have salvation; but the sense is, that their salvation was to be attributed entirely to him. This will undoubtedly be the song of the released forever, and all who reach the heavenly world will feel that they owe their deliverance from eternal death, and their admission to glory, wholly to him. Prof. Robinson (Lexicon) renders the word "victory" here. The fair meaning is, that whatever is included in the word "salvation" will be due to God alone - the deliverance from sin, danger, and death; the triumph over every foe; the resurrection from the grave; the rescue from eternal burnings; the admission to a holy heaven - victory in all that that word implies will be due to God.
Which sitteth upon the throne - notes on Revelation 4:2.
And unto the Lamb - notes on Revelation 5:6. God the Father, and He who is the Lamb of God, alike claim, the honor of salvation. It is observable here that the redeemed ascribe their salvation to the Lamb as well as to Him who is on the throne. Could they do this if he who is referred to as the "Lamb" were a mere man? Could they if he were an angel? Could they if he were not equal with the Father? Do those who are in heaven worship a creature? Will they unite a created being with the Anointed One in acts of solemn adoration and praise?

Salvation to our God - That is, God alone is the author of the salvation of man; and this salvation is procured for and given to them through the Lamb, as their propitiatory sacrifice.

(9) And cried with a loud voice, saying, Salvation to our God which sitteth upon the throne, and unto the Lamb.
(9) The praise of God, celebrated first by the holy men, in this verse, then by the heavenly angels, in the two verses following (Revelation 7:11-12).

And cried with a loud voice,.... To show the strength of their affection, and the greatness of their joy, and how sensible they were of the favour they enjoyed, and how hearty they were in the following ascription of glory to God, and the Lamb.
Saying, salvation to our God which sitteth upon the throne, and unto the Lamb; by "salvation" is meant, not only temporal salvation, and those many deliverances, which God had wrought for them, and particularly in bringing them out of great tribulation, Revelation 7:14; but spiritual and eternal salvation, which is the salvation of the soul, and is owing to the free grace of God, and the blood of Christ; and the sense is, that God and the Lamb are the sole authors of it, and the glory of it ought to be given to them, and to no other: God the Father, who sits upon the throne, resolved upon it in his eternal purposes and decrees, and contrived and formed the scheme of it in the council of peace, and he made sufficient provision for it in the covenant of grace; and as he from eternity appointed his Son to be his salvation to the ends of the earth, so in the fulness of time he sent him to be the Saviour of the world, and delivered him up for all his people, unto death itself, and spared him not, but awoke the sword of justice against him, and sheathed it in him; and since he had such a concern in salvation, the glory of it in right belongs to him: and the Lamb, the Son of God, he engaged to do the will and work of God, and from everlasting became the surety of the better testament; and in time he came to seek and to save lost sinners, and he is become the author of eternal salvation to them; his own arm has brought it, and it is in him, and no other, even a salvation from sin, Satan, the law, the world, hell, and death, and wrath to come; and it will be the employment of the saints, both in the new Jerusalem church state, during the thousand years' reign, and in heaven to all eternity, to ascribe the glory of all this, not to themselves, to their merits and works of righteousness, or to any creature whatever, but to God and the Lamb only.

cried--Greek, "cry," in the three oldest manuscripts, A, B, C, Vulgate, Syriac, and Coptic. It is their continuing, ceaseless employment.
Salvation--literally, "THE salvation"; all the praise of our salvation be ascribed to our God. At the Lord's entry into Jerusalem, the type, similarly "salvation" is the cry of the palm-bearing multitudes. Hosanna means "save us now"; taken from Psalm 118:25, in which Psalm (Psalm 118:14-15, Psalm 118:21, Psalm 118:26) the same connection occurs between salvation, the tabernacles of the righteous, and the Jews' cry to be repeated by the whole nation at Christ's coming, "Blessed be He that cometh in the name of the Lord."

Salvation to our God - Who hath saved us from all evil into all the happiness of heaven. The salvation for which they praise God is described, Revelation 7:15; that for which they praise the Lamb, Revelation 7:14; and both, in Revelation 7:16-17.