It's pre-service, and the pastor is revving up the praise-music types and preemptively wearing out the children by engaging in a by-request sing-along. One of the little kids suggests "This Little Light of Mine," which is a favorite because the kids learned hand motions for this song at summer camp.
So the pastor is playing guitar and leading the congregation in "This Little Light of Mine." One tiny tyke, encouraged by his older sister, joins the pastor at the front of the church and raises his index finger, his "little light." But as he gets into the song, pretty soon he's whipping his whole arm around and around his head in great circles as if he's lassoing a steer. For five stanzas.
Note to parents: Better hide your lighters.