There are scriptual reason for all teachings of JW's. The "Bible Teach" book is no exception. If you notice, Jesus was not baptised until we was at a very mature age (around 30yrs). This is because the bible shows that baptism requires a person to fully understand its signicance. (Acts 2:41) A baby does not have the mental capacity to understand the significance of baptism. Jesus was not baptised as an infant of a child. A person has to 'learn' first what baptism represents, why it is neccesary, what responsibilities come with it, etc. This implies taking in knowledge of all those things and more. Matthew 28:19,20 mentions that Jesus followers were to baptise AND teach people to 'observe' all the things Jesus commanded. To 'observe' those commands, one would have to understand them, would they not? For example, we stop at 'red lights' because at some point we 'learned' what they represented. How can one fully understand what is required, if they have not taken in knowledge of those things? John 17:3 mentions specifically taking in knowledge of Jesus AND Jehovah. True faith comes from knowledge. Matthew 7:13 shows clearly that not ALL worship is acceptable. Therefore simply believing is not sufficient one must 'learn' and take in accurate knowledge in order to know how to worship God correctly. Matthew 6:9 show that we must make God's 'name' known or sanctify it, but how can one sanctify it, if they don't even 'know' what it is? Again that implies a taking in of knowledge. When Jesus was on the earth he did not simply say, "I'm Jesus, so believe in me." But rather he did works, he performed miracles, AND he 'taught' the people extensively about important things. If knowledge was not important or secondary, he could have simply spent all his time baptising the people instead of teaching.