Revelation 5:12

“Saying with a loud voice, etc.] To signify their zeal, fervour, and affection for Christ, and to make a free, open, and public acknowledgment of him, and that all might hear of his worthiness, and of the praise and glory that were due unto him: worthy is the Lamb that was slain; they address him as the Lamb, and not as the Lord of lords, and their Lord; and speak of him as having been slain, and celebrate the virtue and efficacy of his sufferings and death, and ascribe his worthiness to receive glory and honour thereunto; but do not add, as the living creatures and elders do, “and hast redeemed us to God by thy blood”; because, though they were the subjects and objects of confirming grace by…”

“to receive power--Greek, "the power." The remaining six (the whole being seven, the number for perfection and completeness) are all, as well as "power," ranged under the one Greek article, to mark that they form one complete aggregate belonging to God and His co-equal, the Lamb. Compare Rev 7:12, where each of all seven has the article. riches--both spiritual and earthly. blessing--ascribed praise: the will on the creature's part, though unaccompanied by the power, to return blessing for blessing conferred [ALFORD].”

“Saying with a loud voice, Worthy is the Lamb that was slain - See the notes on Revelation 5:2, Revelation 5:9. The idea here is, that the fact that he was slain, or was made a sacrifice for sin, was the ground or reason for what is here ascribed to him. Compare the notes on Revelation 5:5. To receive power - Power or authority to rule over all things. Compare notes on Matthew 28:18. The meaning here is, that he was worthy that these things should be ascribed to him, or to be addressed and acknowledged as possessing them. A part of these things were his in virtue of his very nature - as wisdom, glory, riches; a part were conferred on him as the result of his work - as the mediatorial dominion…”

“Worthy is the Lamb - The elders said, Rev 5:9, "Worthy art thou." They were more nearly allied to him than the angels. To receive the power, &c. - This sevenfold applause answers the seven seals, of which the four former describe all visible, the latter all invisible, things, made subject to the Lamb. And every one of these seven words bears a resemblance to the seal which it answers. Revelation 5:13”

“5:12 This doxology ascribes to Jesus divine honors that are reserved for God alone (see 4:11; 5:13; 7:12).”

“Worthy: Rev 5:9; Zac 13:7 to receive: Rev 4:11, Rev 7:12, Rev 19:1; Mat 28:18; Joh 3:35, Joh 3:36, Joh 17:2; Co2 8:9; Phi 2:9-11; Ti1 1:17 Revelation 5:13”