"Teaching the Cause is disseminating the power of the Holy Spirit" - Hand of the Cause Leroy Ioas
Teaching the Cause is disseminating the power of the Holy Spirit, and when you become a teacher of the Cause you become a channel through which the Holy Spirit descends into the world and goes out to those to whom you teach. So actually, the teacher secures greater benefit than the one whom he teaches, because he is then in contact with the power of the Holy Spirit.