First United is an affiliate of The Center for Progressive Christianity (TCPC) and seeks to further its mission:
- To reach out to those for whom organized religion has proved ineffectual, irrelevant, or repressive, as well as to those who have given up on or are unacquainted with it.
- To uphold evangelism as an agent of justice and peace.
- To give a strong voice both in the churches and the public arena to the advocates of progressive Christianity.
- To support those who embrace the search, not certainty.