How is the theme of conversion addressed in the poem, Late and Deep?

One of the important themes in this poem is the desperate resort to conversion by the Jews. Many times over the centuries, Jews have been forced to choose between betraying their faith and losing their lives, as well as the lives of their families. Sometimes they choose death, and at other times they convert externally, hoping to keep their faith alive in secret. It was often the function of the Inquisition to ferret out these secret Jews. Whatever choice they made, the Jews faced anguish, and their forced conversions were always suspect, just as they cut Jews off from their own co-religionists. This poem deals with a defiant and doomed choice to convert. Conversion is thus a more painful and serious matter to Jews than it might be to members of some other religions.