I was probably toward 8 1/2 when I actually joined the church and was baptized - and, my God, did I take it seriously! I was a zealot who irritated every one of my third-grade friends. They didn't beat me up, but I got labeled "the preacher girl."
I remind you that there are churches so completely out of the hands of God that if the Holy Spirit withdrew from them, they wouldn't find it out for many months
Every bishop can testify to the promptings that attend calls to serve in the Church. Frequently the call seems to be for the benefit not so much of those to be taught or led as for the person who is to teach or lead.