Fausto of The Socinian blog has generously offered a good list of Bible quotes that speak to Unitarian-Universalist concerns. One quote popular among Universalists back in the day that doesn’t happen to appear on his list is 1. Corinthians 15:22. “For as in Adam all men die, even so in Christ shall all be made alive.”
Fausto’s argument is that Unitarian-Universalists need to be at least acquainted with the proof-texts of their own traditions if they are to maintain an authority when debating with Biblically-oriented Christians. There probably aren’t many such Christians who are susceptible to UU exegesis, but it certainly doesn’t hurt for religious liberals to rediscover the immense resources available in the Bible.