For
as the laws of God and man forbid any one, who has a wife living, to
cohabit with another woman, how distant or for how long a time soever
his lawful wife may be separated from him, so he who has been
espoused to Christ in the Catholic Church, cannot without the crime
of spiritual adultery, upon any pretext whatsoever, engage himself in
the communion of heretics.
--
Saint John the Almoner
