Can you be christened at 26Watch this thread
Acts 8:36*-38 KJV
As Philip said "If thou believest with all thine heart, thou mayest".
I'm not quite sure if this is to do with John not being a Christian himself; or if its because the effect of baptism is thought to be derived from God, not the person doing it.
heart, thou mayest" Acts 8:37 KJV) as water baptism is just a public proclamation of our salvation (and faith) and not part of it. Therefore, the Bible actually rejects infant baptism.