I am one of Jehovah's Witnesses and have been for over 39 years.
In my personal research for the one religion ("one faith") that follows the Bible the closest (Eph. 4:4, 5), I found that Jehovah's Witnesses base all of their beliefs, their standards for conduct, and organizational procedures on the Bible. Through decades of continuous, thorough study, I concluded that out of all of the religions that exist today, their understanding of the Bible is the most accurate in all of the essential Scriptural truths.
Additionally, my research of the Bible has given me insight as to who God really is. He is NOT some mysterious, triune, angry God who has no problem letting erring ones suffer in fiery torment as some may be led to believe. No, the Bible shows that He truly is more loving than we can even comprehend at this time. For those who earnestly desire to "take in [accurate] knowledge of" Him and His son, Jesus Christ (John 17:3), the reward will not just be "eternal life", but also a deep satisfaction that what is learned is indeed the Truth.