The titular Gemstones of “The Righteous Gemstones” have always had a complicated and less-than-righteous past, but above all else, they have striven to do the right thing — to grow and change and aim to be better. That is, if they only could get out of their own way first.

This tension has long served as a thorough and weighty foundation for the HBO comedy series, but the final season of the Danny McBride-created series has this idea on Front Street. Season 4 picks up with the whole of the Gemstone family in various states of flux. After coming out, Kelvin (Adam DeVine) started an Lgbtqia+ organization at the church, called Prism, and is finding real success for the first time. Judy (Edi Patterson) and Bj (Tim Baltz) find their relationship stronger than ever until their bonds are tested like never before. Jesse (McBride) is struggling to locate his place in...