You incorrectly assume here, that faith, is itself, not a deed.
When it was asked of Christ, which is the most important commandment, he said to love the Lord thy God with all thy heart, and all thy mind, and all thy soul...for this is the first and greatest commandment.
You're free to believe what you want, but don't assume to know the mind of God, for it is written that your ways, are not my ways; and your thoughts, are not my thoughts.
I'm not assuming to know the mind of god, just hoping that if there is one he won'd send a nice guy like me into an eternal pit of fire.
You, on the other hand assume that your book IS the word and thoughts of God.
What if the muslims are right, and you die and meet Allah?
What if the Jews are right and you die and God tells you you've been worshipping a false prophet, he is not my son?
You're taking the same chance I'm taking, I'm your religious equal.