So far, I have referred only to the intellectual side of one's education. The spiritual equipment is even more important. In heathendom one comes in contact with towering systems of idolatry and superstition, venerable with age and rooted deeply in the nature and habit of the people. The Christian teacher realizes that, in his conflict with these systems, he is powerless, unless backed by Omnipotence. He is thrown upon the divine resources, and learns, perhaps for the first time, that, while apart from Christ he can do nothing, with Christ he can do all things. A new experience of the presence and power of the Saviour comes to him. The struggle that at first taxed all his energy is at last a glad walk over the course in the strength of Christ. Anxiety and fear have taught him lessons which he could not otherwise have learned. He has become a hopeful and joyful Christian. All this tends to render the missionary doctrinally sound. Evangelization makes men evangelical. When you tell the gospel to a heathen sinner, you must put it in the simplest terms, or he will fail to understand it. Your effort to reach his mind and heart clarifies your own. To one condemned and lost, no mere human example in Jesus will suffice; you need an atoning Saviour. To one struggling with demonic powers and helpless in their grasp, no mere man of Nazareth, no Jesus, according to the flesh, will answer; you need the Lord of Glory, who was declared to be the Son of God with power by the resurrection from the dead. The doctrine of the Holy Spirit who regenerates, sanctifies, comforts, and saves, becomes an indispensable element in preaching, and so becomes ingrained into the preacher's confession of faith. A personal and present Christ, Immanuel, God with us, is the source of the missionary's power; he has practical proof that the Holy Spirit is Christ in spiritual form, with his people alway, even to the end of the world. The reality of God in Christ, manifest in nature, ruling the world in providence, preparing the nations for judgment, sure to bring the world to his feet, becomes an article of the missionary's faith, and a constant subject of his teaching. The minimizing of Christ's nature and claims has no proper place on missionary ground. The missionary indeed is exerting an influence on the faith of the homeland equal to that which he exerts upon the heathen abroad.