Why Missionaries Need The Holy Ghost

The Doctrine and Covenants teaches, "And the Spirit shall be given you by the prayer of faith; and if ye receive not the spirit ye shall not teach" (D&C 42:14). A prayer of faith is different from ordinary prayer. Faith as Alma taught is not a perfect knowledge but lets a person act as if they know something is true. Thus faith is the power to act without perfect knowledge. We tell the Lord in prayer what we are going to do and make a commitment to Him - then we GO AND DO what we told him. When we ACT LIKE A MISSIONARY and GO AND DO what we have promised the Lord, we are blessed with the spirit. In the DOING the spirit comes. This is why faith is often referred to as a PRINCIPLE OF POWER.