I've been writing at this site (and earlier, at boyinthebands.org) since 2003, and it amazes me that I've written so little about "Western Unitarianism" or "the Unity Men": those Unitarians of the Western Unitarian Conference who promoted a theistic moral religion, in contrast to the Unitarian Christianity of New England.
This is all I found of mine in 16 years of writing:
To be honest, it's not my thing. But it is an honest expression of religious faith, has a genuine appeal and is a honorable part of the Unitarian tradition.
And more: I worry that they're not going to be any new Unitarian or Universalist congregations. The UUA seems to have gone out of the church planting business. Perhaps this is just as well since there's been noted tendency, even among the Christians, to encourage congregations to have an all-inclusive Unitarian Universalist identity, rather than being true to a particular vision. It never made sense to me, either on theological or polity grounds. This kind of society (and it probably would be called a society) might be very desirable today.
Without banging my "parish and church" drum too hard, the Theist church looks to me to be the perfect modernist parish without a church. By which I mean it's a public service body, dedicated to education and morals though worship and service. Its "sacrament" is the pulpit. The (missing) church is that body of believers who seek (to keep it brief) closeness to God through profession of faith, and the sacraments of baptism and the Lord's Supper. It is specific in much the same way the parish is general. Can you guess which side the Unitarians have defaulted to? (And most, but far from all, of the Universalists.)
Of course, the Western Unitarians had a particular focus and context: public morals, personal development and a calm sense of awe and devotion. I'll defer to those who know it better to describe it in depth. It was progressive in a way that might make us roll our eyes, but what doesn't these days? Revivals, if anyone wants one, require interpretation.
Looking back to when they Western Unitarians were at their strength, you can also see a parallel movement in Reform Judaism. With its emphasis on the prophetic and universal, and a strong reduction in the use of Hebrew, Classic Reform offer something of a similar liturgical experience to the Western Unitarians. At least you could be excused if you stumbled into either service and confuse it for the other. Classic Reform at its most Classic Reformist had organs in worship, some used hymnals, might refer their pulpit-gowned rabbis as "The Rev." and some even met on Sundays. I would love to visit one of the remaining Classic Reform congregations, though watching the livestream of services from Temple Emanu-el (New York) or reading the Union Prayer Book, Sinai Edition, Revised puts me close to the tone if not the text of the Western Unitarians. I think the clearest "bridge" is the hymn "Praise to the Living God," a traditional Jewish synagogue song, translated into English by a Unitarian minister. It was found both in the Union Hymnal (Reform Jewish, 1897) and Unity Hymns and Chorales (Western Unitarian, 1911). This is the same hymn that would open Hymns of the Spirit, and a version is found in Singing the Living Tradition.
Of course, Unity Hymns and Chorales is where you go for a words, if you wanted it as a period piece. (Or perhaps from the Hymns of the Spirit, the fourth, fifth, sixth and eleventh services.) It's lovely, but a new Theist society, eastern or western, will need to find its own voice and its own take on that vital if emotionally constrained approach to speak in this anxious age, beset by demons.