Paul was speaking of when righteousness came from the law. Paul then goes on to say this...."BUT
NOW the righteousness of God without the law is manifested...." and "To declare,
AT THIS TIME...."
Romans 3:21-22 But now the righteousness of God without the law is manifested, being witnessed by the law and the prophets; Even the righteousness of God which is by faith of Jesus Christ unto all and upon all them that believe: for there is no difference:
Romans 3:26 To declare, I say, at this time his righteousness: that he might be just, and the justifier of him which believeth in Jesus.
So let's just back up to the verse I was citing. I said Paul would not have been talking about the final judgment, because the final judgment will be based on whether men are believers or unbelievers. Paul speaks of the evil the coppersmith did to him (personally), and asks that the Lord reward him according to his works. I'm sure we can agree that Paul was not being spiteful and damning Alexander as an unbeliever wanting the Lord to send him to hell. Rather, he was asking the Lord to have him suffer consequences right here on earth so that he would learn that doing evil does not pay.
2 Timothy 4:14
Alexander the coppersmith did me much evil: the Lord reward him according to his works:
We see a similar thing here....which speaks to the value of reaping what we sow right here in this life.
1 Corinthians 5:1-2
It is reported commonly that there is fornication among you, and such fornication as is not so much as named among the Gentiles, that one should have his father's wife. And ye are puffed up, and have not rather mourned, that he that hath done this deed might be taken away from among you.
1 Cor. 5:5 To deliver such an one unto Satan for the destruction of the flesh, that the spirit may be saved in the day of the Lord Jesus.