What would be a good thesis for an essay about religion in A Farewell to Arms?

A Farewell to Arms is viewed
primarily as a war novel or as a love story, Hemingway's Romeo and
Juliet, but religion plays a very significant role in it. A good thesis, and
one that would be easily supported from the text, would be to state that religion is a
major motif in the novel.

Internal research shows that the
major characters, and the minor characters, as well, bring numerous discussions of
religion into the story at various times and in differing situations. Frederic discusses
religion with several characters, including Catherine, who tells him that he is her
religion. On one occasion, Frederic draws a distinction between being religious and
being like Jesus. Count Greffi and Frederic have an extended discussion about religious
faith; the Count reminds Frederic that love is "a religious feeling," and both he and
Frederic hope to eventually find faith in God. The priest speaks often of religion, and
when Passini is horribly and mortally wounded in battle, his suffering is expressed in
terms of religion. As Catherine lays dying, Frederic prays desperately for her to
live.

Taking notes over every religious reference in the
novel would make it possible to categorize them in some way so as to develop a working
outline to support the thesis. Some possible outline divisions might be conventional
expressions of religion, unconventional expressions of religion, the search for
religious faith, the rejection of religion, and religion born of suffering, to think of
only a few.