Those verses are a prophecy which speaks of what the Lord Jesus would do after He was made in the likeness of men:
"Let this mind be in you, which was also in Christ Jesus: Who, being in the form of God, thought it not robbery to be equal with God: But made himself of no reputation, and took upon him the form of a servant, and was made in the likeness of men" (Phil.2:5-6).
Before he was made flesh He was "in the form of God." The Greek word translated "form" means
"the form by which a person or thing strikes the vision; the external appearance" (
Thayer's Greek English Lexicon).
So when those in heaven will see the ONE on the "Throne of God and of the Lamb" they will see both the Lord Jesus and God at the same time because the Lord Jesus is God:
"And there shall be no more curse: but the throne of God and of the Lamb shall be in it; and his servants shall serve him: And they shall see his face; and his name shall be in their foreheads" (Rev.22:3-4).
The Lord Jesus is now in the eternal kingdom and He cannot be seen by men because our flesh and blood bodies are not equipped to see eternal things (1 Cor.4:18). And here how He is described as He sits in the eternal kingdom at the present time:
"Howbeit for this cause I obtained mercy, that in me first Jesus Christ might shew forth all longsuffering, for a pattern to them which should hereafter believe on him to life everlasting. Now unto the King eternal, immortal, invisible, the only wise God, be honour and glory for ever and ever" (1 Tim.1:16-17).
The Lord Jesus is the only God.