John Chrysostom

"Because He has 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 to all men, in that He raised Him from the dead." "Having given assurance to all men," i.e. He has given proof in the rising of Jesus from the dead. Let us repent then: for we must assuredly be judged. If Christ rose not, we shall not be judged: but if he rose, we shall without doubt be judged. …

Homily on Acts 38 ↗

Theophylact of Ohrid

"For He has appointed a day on which He will righteously judge the world." He will assuredly judge, he says, all deeds and thoughts through the "Man" whom He appointed to be Judge of the living and the dead. This is the Lord who became man.

Commentary on Acts ↗

Polycarp of Smyrna

"Wherefore, girding up your loins," "serve the Lord in fear" and truth, as those who have forsaken the vain, empty talk and error of the multitude, and "believed in Him who raised up our Lord Jesus Christ from the dead, and gave Him glory," and a throne at His right hand. To Him all things in heaven and on earth are subject. Him every spirit serves. He comes as the Judge of the living and the dead. His blood will God require of those who do not believe in Him. …

Epistle to the Philippians 2 ↗