***I do not need to convert anyone. ***
You CAN’T convert anyone, that is up to the Holy Spirit. We are all called to share the gospel to everyone we meet. The Holy Spirit does his work, we do our responsibilities. We tell others about God because he loved us.
If it were up to us, all we would need is a good arguement, be a solid conversationalist, have a snappy comeback, and be convincing. And, if we weren’t convincing enough, and the person we were talking to went to Hell, WE FAILED!!! So, how many people have you failed to convince yet?
It is correct that we cannot convert anyone to Christ. I was speaking about converting one’s soteriology to Calvinism, which I would not consider exactly the same. But yes—the Holy Spirit clearly must draw those called by the Father to repentance and the need for a Savior.