My grandparents have always attended a very traditional church, where they sing a lot of old hymns. One of the hymns they sing every week is "Gloria Patri" (or something like that), and when I was little, I read that in the bulletin, and was convinced that a woman named Gloria was going to speak in church that week. (I was always puzzled as to why her name was in the bulletin, but I never heard her preach)
A childhood belief about hymns

others believed things like this
- I used to think that church songs were pop music. Well, we did sing them in church every week...— Roxy
- My fiance was in church as a kid and he saw the Vicar of the church and asked his Mum if it was God.— Andys fiancee
- Did anyone else sing "Hark, the hairy angels sing"?— Jill
- My mum said that when I used to sing "noahs arc" at school I would sing "who built the arc, no one, no one"— Clare
- I once refused to believe in Thursday. I'd heard there were seven days in a week, but could only name six.Anon
- I would speak in gidderish, convinced that it was some foreign language I had never heard of— Molly