There is a great deal to be said for experience. You may vehemently deny one's beliefs, but you cannot deny what they've experienced.
In a town on the outskirts of Chicago an atheist was lecturing to a very large audience and, having finished his speech, he invited any who had questions to come on the platform.
After a few minutes, a man who had been well known throughout town as an obnoxious drunk, but who had recently become a born-again Christian, stepped forward. 
As he stood there he took an orange from his pocket and coolly began to peel it. The speaker asked him to present his question. The man, without replying to him, finished peeling his orange, and then ate it. When he had finished his orange he turned to the lecturer and asked him if it was a sweet one.
Very angry, the man said, "Idiot, how can I know whether it was a sweet one or sour, when I never tasted it?" To this the converted alcoholic responded, "And how can you know anything about Christ, if you have not tried Him?"
The Bible says, "O taste and see that the Lord is good!" (Psalm 34:8)
If you've spent much of your life on the outside looking in, trying to figure out the Church and Christianity, but do not have the experience of knowing the love and forgiveness of Christ, and the assurance of eternal life...then this would be a good time to "taste and see that the Lord is good!"
