“To the one who conquers and observes my deeds down to the end, I will give authority over the nations."

[Bible Speaks]

“To the one who conquers and observes my deeds down to the end, I will give authority over the nations, and he will shepherd the people with an iron rod so that they will be broken to pieces like clay vessels, just as I have received from my Father.” (Rev. 2:26, 27)

So Christ’s heavenly armies will also include his anointed brothers, who by then will have received their heavenly reward. The anointed corulers will be at his side when he accomplishes “awe-inspiring things” while shepherding the nations with an iron rod.

After destroying Satan’s wicked system of things on earth, Christ ‘in his splendor’ will “go on to victory.” (Ps. 45:4) He will complete his conquest by abyssing Satan and his demons for the full length of the Thousand Year Reign. (Rev. 20:2, 3) 

With the Devil and his angels then in a state of deathlike inactivity, earth’s inhabitants will be free of satanic influence and will be able to live in total subjection to their victorious and glorious King. Before they see the earth gradually transformed into a global paradise, however, they will have another reason to rejoice with their King and his heavenly associates.

God’s delegating vast authority and power to creatures (Mt 28:18; Re 2:26, 27; 3:21) in this way is noteworthy inasmuch as the question of the integrity of all God’s creatures, that is, their wholehearted devotion to him and their loyalty to his headship, formed a vital part of the issue raised by God’s Adversary. 

That God could confidently entrust any of his creatures with such remarkable authority and power would in itself be a splendid testimony to the moral strength of his rule, contributing to the vindication of Jehovah’s sovereignty and exposing the falsity of his adversary’s allegations.

https://wol.jw.org/en/wol/d/r1/lp-e/1200002615?q=rev+2%3A26%2C27&p=par