While some songs of this vein can come across as sappy and unconvincing, "One Hell of an Amen" has enough bite in the production to sell it, while Brantley conveys raw emotion in spades.
The enjoyment of this single for many may come down to if you can tolerate Gilbert's style and vocals. I can, so I find it to be nothing short of a masterpiece. This track is downright fantastic, and is the best single at radio right now, bar none.
(On somewhat of a side note, the video is definitely worth a watch.)
Listen: "One Hell of an Amen"