Here it is, straight from The Sparrow by Mary Doria Russell, (c)1996.
"There were many possibilities but once you grasped what a man was looking for, you had the beginnings of understanding. At a loss, he studied the exotic face, half-hidden by dark hair and bed linens, and whispered, 'So what, in the name of Jesus, is he?'" (p. 170).
Summary of The Sparrow: "The Sparrow is a novel about a remarkable man... who undergoes an experience so harrowing and profound that it makes him question the existence of God. This experience, the first contact between human beings and intelligent extraterrestrial life, begins with a small mistake and ends in catastrophe. Sandoz is the only surviving member of a crew that went to discover a new planet. Like other great explorers of the New World, they were confronted by a civilization so alien and incomprehensible that they were individually compelled to wonder at what it means to be human. On his return, Sandoz must face a Jesuit inquiry and public condemnation as he is accused of the most heinous of crimes..."