How do i tell my parents i'm a ?

I have always been raised in church.. lived in the same small town forever.. but i've fond myself lost in a world of girls, instead of guys.. Not completely sure that it's going to go over so well telling my parents. don't have the typical family.My dad is a deacon at church, mom teaches sunday school as well as my grandmother and grandfather.They don't allow me to go out anymore due to being around my "gay friends". What do i do? How do i tell them?