Well, if his salvation were dependent on him, then he might be in trouble. But Salvation is of God, totally.
No one preached the Gospel to me directly. I was brought to my knees by the Power of God, and saw the crucified Christ. There were no words, none were needed. I fell to my knees a sinner, and when I finally got up, I knew I was saved. I have never doubted it since that day. I was washed, cleansed, and forgiven, and I knew it. I saw the Lord crucified. God regenerated my heart then and there. I knew my heart had been changed, because I wanted nothing to do with religion before. God changed my heart, allowed me to see Christ crucified, and I believed, all in one moment of time. I would not have believed if He had not changed my heart. I didn't change it. I didn't "decide" to believe. God changed me. Then I did believe. Not before.
One still has to believe in the Gospel message to be saved. (Rom.10:17)
Would it be possible to elaborate your story a bit? You saw the crucified Christ? Was this a vision? Did Christ come to you in person?