Dan 7:9-10, 13-14, Acts 10:42, Acts 17:31, 1 Pt 4:5
God is the judge. (Dan 7:9-10)
Dan 7:9 I beheld till the thrones were cast down, and the Ancient of days did sit, whose garment was white as snow, and the hair of his head like the pure wool: his throne was like the fiery flame, and his wheels as burning fire. 10 A fiery stream issued and came forth from before him: thousand thousands ministered unto him, and ten thousand times ten thousand stood before him: the judgment was set, and the books were opened.
It was foretold in the Old Testament that God would entrust all judgment to His Son. (Dan 7:13-14)
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. 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.
God entrusted all judgment to His Son, Jesus. (Jn 5:22, Act 10:42, Acts 17:31, 1 Pt 4:5)
Jn 5:22 For the Father judgeth no man, but hath committed all judgment unto the Son:
Act 10:42 And he commanded us to preach unto the people, and to testify that it is he which was ordained of God to be the Judge of quick and dead.
Acts 17:31 Because he hath appointed a day, in the which he will judge the world in righteousness by that man whom he hath ordained; whereof he hath given assurance unto all men, in that he hath raised him from the dead.
1 Pt 4:5 Who shall give account to him that is ready to judge the quick and the dead.