Hi juvyjabian, There were indeed anti-Christs before the death of Paul, Paul said this:
1 John 2:18 Little children, it is the last time: and as ye have heard that antichrist shall come, even now are there many antichrists; whereby we know that it is the last time.

There's a whole anti-Christ system that's been around for ages. If you think about it, even the Pharisees who looked for ways to accuse Jesus, fell into that category.