Read Rev.chs 4 and 5.
The answers are all there.
Jesus was not on the throne until He had overcome.
Overcoming is something a man does.
Notice--
Dan 7:13 I saw in the night visions, and, behold, one like the Son of man came with the clouds of heaven, and came to the Ancient of days, and they brought him near before him.
Dan 7:14 And there was given him dominion, and glory, and a kingdom, that all people, nations, and languages, should serve him: his dominion is an everlasting dominion, which shall not pass away, and his kingdom that which shall not be destroyed.
Rev 5:2 And I saw a strong angel proclaiming with a loud voice, Who is worthy to open the book, and to loose the seals thereof?
Rev 5:3 And no man in heaven, nor in earth, neither under the earth, was able to open the book, neither to look thereon.
Rev 5:4 And I wept much, because no man was found worthy to open and to read the book, neither to look thereon.
Rev 5:5 And one of the elders saith unto me, Weep not: behold, the Lion of the tribe of Juda, the Root of David, hath prevailed to open the book, and to loose the seven seals thereof.
Rev 5:6 And I beheld, and, lo, in the midst of the throne and of the four beasts, and in the midst of the elders, stood a Lamb as it had been slain, having seven horns and seven eyes, which are the seven Spirits of God sent forth into all the earth.
Rev 5:7 And he came and took the book out of the right hand of him that sat upon the throne.
and who was sitting on the throne?
Rev 4:8 And the four beasts had each of them six wings about him; and they were full of eyes within: and they rest not day and night, saying, Holy, holy, holy, Lord God Almighty, which was, and is, and is to come.
Rev 4:9 And when those beasts give glory and honour and thanks to him that sat on the throne, who liveth for ever and ever,
Rev 4:10 The four and twenty elders fall down before him that sat on the throne, and worship him that liveth for ever and ever, and cast their crowns before the throne, saying,
Rev 4:11 Thou art worthy, O Lord, to receive glory and honour and power: for thou hast created all things, and for thy pleasure they are and were created.
and who in the throne is worshipped by all AFTER Jesus the man has sat upon Gods Throne with Him--
Rev 5:13 And every creature which is in heaven, and on the earth, and under the earth, and such as are in the sea, and all that are in them, heard I saying, Blessing, and honour, and glory, and power, be unto him that sitteth upon the throne, and unto the Lamb for ever and ever.
The Bible describes how God raised up a man who will reign over His creation until----
1Co 15:24 Then cometh the end, when he shall have delivered up the kingdom to God, even the Father; when he shall have put down all rule and all authority and power.
1Co 15:25 For he must reign, till he hath put all enemies under his feet.
1Co 15:26 The last enemy that shall be destroyed is death.
1Co 15:27 For he hath put all things under his feet. But when he saith all things are put under him, it is manifest that he is excepted, which did put all things under him.
1Co 15:28 And when all things shall be subdued unto him, then shall the Son also himself be subject unto him that put all things under him, that God may be all in all.
Christ the man will reign over the new creation with the resurrected saints beginning here--
Co 15:21 For since by man came death, by man came also the resurrection of the dead.
1Co 15:23 But every man in his own order: Christ the firstfruits; afterward they that are Christ's at his coming.
LA