 His sermons covered a wide scope of thought and action, and he showed the loftiness of his spirit when, in spite of congregational opposition to the expression of his views during the American Civil War, he continued, both in prayer and in his discourses, to show his warm sympathy with the cause of the slave.In appreciation of his attitude during these trying times the Union League Club of Philadelphia placed him on the roll of its honorary members.When, in 1867, Maimonides College was established in Philadelphia, Morais was made professor of the Bible and of Biblical literature, and he held the chair during the six years that the college existed.