Revelation 5:13

every creature
All that is creaturely worships the Creator. This alone establishes that Jesus is not a created being—for worship of any creature , no matter how high, is blasphemous idolatry (Rev. Rev. 22:8-9+).

Therefore God also has highly exalted Him and given Him the name which is above every name, that at the name of Jesus every knee should bow, of those in heaven, and of those on earth, and of those under the earth, and that every tongue should confess that Jesus Christ is Lord, to the glory of God the Father. (Php Php. 2:9-11)

in heaven and on the earth and under the earth and such as are in the sea
All of the created order—no matter their location—pay homage to the Father and the Son (Ps. Ps. 148:7-10; Php. Php. 2:10). The fourfold division of the phrase denotes the universal creation, similar to how the heavens and the earth are used (Gen. Gen. 1:1), or under the earth may refer to those in Hades: both demons in the bottomless pit (Luke Luke 8:31; Rev. Rev. 9:1-2+; Rev. 9:11+; Rev. 11:7+; Rev. 17:8+) and the unsaved dead who await final judgment (Rev. Rev. 20:13+). See Four: the Entire World, the Earth. Whether visible (the material realm) or invisible (the spiritual realm), all is dependent for existence every moment upon the favor and will of God. It is in this sense that Jesus is the “Beginning” and “Firstborn” over creation (Col. Col. 1:15; Col. 3:14).

He is the image of the invisible God, the firstborn over all creation. For by Him all things were created that are in heaven and that are on earth, visible and invisible, whether thrones or dominions or principalities or powers. All things were created through Him and for Him. And He is before all things, and in Him all things consist. (Col. Col. 1:15-17)

to Him who sits on the throne and to the Lamb
Both the Father and the Lamb receive equal worship. An astounding indication of the Deity of Christ and the Trinity! Only in the eternal state will we be able to fully apprehend the glory of the Father and the Son (John John 17:24).

I urge you in the sight of God who gives life to all things, and before Christ Jesus who witnessed the good confession before Pontius Pilate, that you keep this commandment without spot, blameless until our Lord Jesus Christ’s appearing, which He will manifest in His own time, He who is the blessed and only Potentate, the King of kings and Lord of lords, who alone has immortality, dwelling in unapproachable light, whom no man has seen or can see, to whom be honor and everlasting power . Amen. (1Ti 1Ti. 6:13-16) [emphasis added]

See commentary on Revelation 5:12. See Worship of God.
Read Revelation 5:13