They start ’em off early in what I will presume to be a Pentecostal/Charismatic church.

Kids really do pay attention and mimic what goes on around them.
From: Bishop Alan’s Blog and Raspberry Rabbit, who wrote:

Quite obviously a baby who’s been listening to the pastor ranting on a Sunday morning. I suppose that Episcopal babies would be lifting their cups up in the air and inviting Teddy, Dolly and Ducky to come up and have a little bits of their teething biscuit no matter what their denominational affiliation might be.
Children do pay attention.