AT an academic conference in Rome on Tuesday, Karen L. King, a church historian at Harvard Divinity School, presented a finding that, according to some reports, threatened to overturn what we know about Jesus, as well as the tradition of priestly celibacy. She identified a small fragment of fourth-century papyrus that includes the words, “Jesus said to them, ‘My wife...’ ” Another clause appears to say, “she will be able to be my disciple.” Some experts have concluded that the manuscript, written in Coptic, is authentic.