The arguments of men have never saved anyone. Being saved is purely a matter of the heart, not intellect. Proper doctrine is important later. But doctrine never softened a hard heart or shut a proud mouth, so that the sinful might be humbled before God, prepared then, for the good word of the saving grace of the Lord.
The video below explains what I mean. Please take the time from your arguments and review it. It will give you much better insights into how salvation works and how to bring others to the saving grace of the Lord, through the convicting power of the law of the Ten Commandments, that God has written in the hearts of all men. Just as the Lord did. The video is called "Hell's best secret". You have only a few minutes to lose and an eternity to gain. I beg you.
http://www.livingwaters.com/listenwatch.shtml