What is God's Kingdom?, page-555

The horseman has a crown so it has authority.
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Jesus also known as the ''son of man'' is the only one given authority to rule over mankind by the ''Ancient of Days'', Jehovah.

(Daniel 7:13, 14) “I kept watching in the visions of the night, and look! with the clouds of the heavens, someone like a son of man was coming; and he gained access to the Ancient of Days, and they brought him up close before that One.  And to him there were given rulership, honor, and a kingdom, that the peoples, nations, and language groups should all serve him. His rulership is an everlasting rulership that will not pass away, and his kingdom will not be destroyed.

In the Gospel accounts the expression ''Son of man'' is found nearly 80 times, applying in every case to Jesus Christ.
(Matthew 8:20) But Jesus said to him: “Foxes have dens and birds of heaven have nests, but the Son of man has nowhere to lay down his head.”
Jesus will soon ''complete his conquest''. - Rev 6:2