In addition to the work which he did in official positions, Morais was most active in religious, educational, and charity matters. The Hebrew Sunday-School Society, the Hebrew Education Society of Philadelphia, and the Young Men's Hebrew Association of that city numbered him among their most steadfast friends. In his own home he gathered about him a small band of young men whom he instructed in Hebrew, Talmud, and Jewish history, and in whom he inspired a zealous love for Judaism which has had a very marked effect upon the character not only of his pupils (among them Isaac Husik), but of the community at large. Among his children, Henry Samuel Morais was also a well-known communal rabbi, serving at several different congregations in Mikve Israel and other congregations in New York and Rhode Island.