I was once told that God, being omnipotent, could of course play the banjo any time he felt like it; but that, being also a god of love, he refrained from doing so.

I can't imagine that, if he existed, he would have any problem with we lesser beings having a nice time plunking away, provided we didn't annoy the neighbours too much, or frighten domestic animals. He never once complained while I was learning the fiddle, which was rather good of him in the circumstances, as it must have been quite a trial for an omniscient -even if mythological- entity.

I bet there are hymns arranged for banjo, though; at any rate late 19th/early 20th century. Some time when God's more officious middlemen down here on Earth weren't looking too closely, perhaps.