 As with men, it has become more popular since the Second Vatican Council to consider committed single life, marriage, parenthood, and many other services as "lay" vocations, since each also requires a commitment to Christian faith and practice.Traditionally the term vocation was used in the Catholic Church only to refer to priestly or religious vocations, the vocation to live a life directly consecrated to God.Thomas Aquinas, e.g., only explicitly uses the term vocation to refer to vocation to grace or conversion, or to enter religious life, though it has been argued that his teaching may be logically extended to include marriage as a vocation.