See commentary on Revelation 5:6.
power . . . honor . . . glory
The same three which were earlier given to the Father in worship (Rev. Rev. 4:10-11+) are now given to the Lamb . Yet, Scripture records that God will not give His glory to another (Isa. Isa. 42:8; Isa. 48:11). Jesus taught, that all should honor the Son just as they honor the Father. He who does not honor the Son does not honor the Father who sent Him [emphasis added] (John John 5:23). Thus He prayed, And now, O Father, glorify Me together with Yourself, with the glory which I had with You before the world was (John John 17:5). What greater statement of divinity could Jesus have made than this? Therefore, it is proper to worship the Son, even as it is proper to worship the Father, for here it has been shown that Father and Son receive the same worship.1 Indeed, Jesus frequently received worship at His First Coming (Mtt. Mat. 2:2; Mat. 14:33; Mat. 15:25; Mat. 28:9; Mat. 28:17; Mark Mark 5:6; Luke Luke 24:52; John John 9:38; John 20:28). Once again, we see that Jesus is God. See commentary on Revelation 1:17.
This scene contrasts markedly with the crucifixion, an event in which all humanity rebelled against its Creator and thought to kill Him so that it could go its own irresponsible, independent way. Here, at last, Jesus Christ receives His due: full acclaim and acknowledgment by every created thing.2
2 Monty S. Mills, Revelations: An Exegetical Study of the Revelation to John (Dallas, TX: 3E Ministries, 1987), Rev. 5:8.