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 hath given...: or, offered faith assurance unto all men, in that he hath raised him from the dead.
English Standard Version
31 because he has fixed a day on which he will judge the world in righteousness by a man whom he has appointed; and of this he has given assurance to all by raising him from the dead."
31 He has set a day when the entire human race will be judged and everything set right. And he has already appointed the judge, confirming him before everyone by raising him from the dead."
New King James Version
31 because He has appointed a day on which He will judge the world in righteousness by the Man whom He has ordained. He has given assurance of this to all by raising Him from the dead."
New Living Translation
31 For he has set a day for judging the world with justice by the man he has appointed, and he proved to everyone who this is by raising him from the dead."
Here we have a sermon to heathens, who worshipped false gods, and were without the true God in the world; and to them the scope of the discourse was different from what the apostle preached to the Jews. In the latter case, his business was to lead his hearers by prophecies and miracles to the knowledge of the Redeemer, and faith in him; in the former, it was to lead them, by the common works of providence, to know the Creator, and worship Him. The apostle spoke of an altar he had seen, with the inscription, "TO THE UNKNOWN GOD." This fact is stated by many writers. After multiplying their idols to the utmost, some at Athens thought there was another god of whom they had no knowledge. And are there not many now called Christians, who are zealous in their devotions, yet the great object of their worship is to them an unknown God? Observe what glorious things Paul here says of that God whom he served, and would have them to serve. The Lord had long borne with idolatry, but the times of this ignorance were now ending, and by his servants he now commanded all men every where to repent of their idolatry. Each sect of the learned men would feel themselves powerfully affected by the apostle's discourse, which tended to show the emptiness or falsity of their doctrines.