Danny McBride stated that he didn't want this show to bash religion; rather he wanted it to lampoon hypocrites. He grew up in the church, and his mother did puppet ministry, and he wanted to take the alternate route that Hollywood does of making fun of one's religious beliefs.
Got renewed for a second season after only four episodes.
Adam Devine based his performance as Kelvin on the hip pastors that seek to convert celebrities to their church. He joked that his character's signature mohawk hairstyle is because "my hair should be as close to God as possible."
In his original draft, Danny McBride had written about a pastor being caught having an affair and having to engage in blackmail to stop it being leaked. The Gemstones were just a part of the church and weren't the main focus. Danny realised that he had much more fun writing for the Gemstones, and thus shifted the story to be from their perspective.
During their time in-between filming, Adam and Tony would work out together. The writers then wrote that into their storyline, as they figured it made sense for their characters.