What is this joy? First of all, it is the joy of the presence of Jesus. We are often inclined to speak most of two other things, the power for sanctification, and the power for service. But I find there is a thing more important than either of those two, and that is that the Holy Ghost came from Heaven to be the abiding presence of Christ in His disciples, in the Church, and in the heart of every believer. The Lord Jesus was going away, and His disciples were very sad; their hearts was sorrowful; but He said to them, "I will come back again, and I will come to you. Your hearts shall rejoice, and your joy no man shall take from you." What took place with them, may take place with us too. The Holy Spirit is given to make the presence of Jesus an abiding reality, a continual experience. And what was that joy that no man could ever touch? It was the joy of Pentecost. And what was Pentecost? The coming of the Lord Jesus in the Holy Ghost to dwell with His disciples. While Jesus was with His disciples on earth, He could not get into their hearts in the right way. They loved Him, but they could not take in His teaching, they could not partake of His disposition, and they could not receive His very spirit into their being. But when He had ascended to Heaven, He came back in the Spirit to dwell in their hearts. It is this alone that will help us to go, the minister to his congregation with its difficulties, the business man to his counter, the mother to her large family with its care, the worker to her Bible class. It is this only that will help us to feel, "I can conquer, I can live in the rest of God." Why? "Because I have the almighty Jesus with me every day." With God's people, there seems to be one hindrance, _they do not know their Saviour_. They do not realize that this blessed Christ is an ever present, all-pervading, in-dwelling Christ, who wants to take charge of their entire lives. They do not know, they do not believe that He is an Almighty Christ, and ready in the midst of any difficulties and any circumstances to be their keeper and their God. This is absolutely true. Many Christians are asked as to how one may have the joy unspeakable, the joy that nothing can take away, the joy of the friendship and nearness and love of Jesus filling his heart. We complain that the rush of competition is so terrible that we can not get time for private prayer. Brother, the Lord Jesus Christ, if He comes to you as a brother and a friend and an abiding guest, can give your heart the joy of the Holy Ghost, so that business will take its right place under your feet. Your heart is too holy to have it filled with business; let the business be in the head and under the feet, but let Christ have the whole heart, and He will keep the whole life. Our glorious, exalted, almighty, ever present Christ! why is it that you and I can not trust Him fully, perfectly to do His work? Shall we not say before God that we do