John Piper's sermon on the anniversary of Roe vs. Wade should be required listening for preachers of every stripe, an object lesson in how to speak the truth on abortion politics.
Piper is an interesting character—a strict Calvinist who recommends his flock read G.K. Chesterton's Orthodoxy even though he realizes it may cause a few of them to be "swept away into the folly of Roman Catholic sacramentalism." (I can vouch that he's right about the risk, though not the "folly.")