defd,
On page 146 of What Does the Bible Really Teach?, the opening sentence of paragraph 6 purports to represent one of the six criteria for determining the true religion. It reads: "God's servants base their teachings on the Bible."
Question 1: Do you believe that to be a certain mark of the true religion?
Question 2: Do you believe that absence of Scriptural basis for teachings is a mark of false religion?
Question 3: Do you personally know, or can you find, the Scriptural basis for the teachings of Jehovah's Witnesses? Feel free to view these as rhetorical.
Respectfully,
OldSoul