The Holy Spirit is called _the Spirit of His Son_ in Gal. iv. 6, “And because ye are sons, God hath sent forth _the Spirit of His Son_ into your hearts, crying, Abba, Father.” We see from the context (vs. 4, 5) that this name is given to the Holy Spirit in special connection with His testifying to the sonship of the believer. It is “_the Spirit of His Son_” who testifies to our sonship. The thought is that the Holy Spirit is a filial Spirit, a Spirit who produces a sense of sonship in us. If we receive the Holy Spirit, we no longer think of God as if we were serving under constraint and bondage but we are sons living in joyous liberty. We do not fear God, we trust Him and rejoice in Him. When we receive the Holy Spirit, we do not receive a Spirit of bondage again to fear but a Spirit of adoption whereby we cry, Abba, Father (Rom. viii. 15). This name of the Holy Spirit is one of the most suggestive of all. We do well to ponder it long until we realize the glad fullness of its significance. We shall take it up again when we come to study the work of the Holy Spirit. X. _The Holy Spirit._ This name is of very frequent occurrence, and the name with which most of us are most familiar. One of the most familiar passages in which the name is used is Luke xi. 13, “If ye then, being evil, know how to give good gifts unto your children: how much more shall your heavenly Father give _the Holy Spirit_ to them that ask Him?” This name emphasizes the essential moral character of the Spirit. He is _holy_ in Himself. We are so familiar with the name that we neglect to weigh its significance. Oh, if we only realized more deeply and constantly that He is the _Holy_ Spirit. We would do well if we, as the seraphim in Isaiah’s vision, would bow in His presence and cry, “Holy, holy, holy.” Yet how thoughtlessly oftentimes we talk about Him and pray for Him. We pray for Him to come into our churches and into our hearts but what would He find if He should come there? Would He not find much that would be painful and agonizing to Him? What would we think if vile women from the lowest den of iniquity in a great city should go to the purest woman in the city and invite her to come and live with them in their disgusting vileness with no intention of changing their evil ways. But that would not be as shocking as for you and me to ask the Holy Spirit to come and dwell in our hearts when we have no thought of giving up our impurity, or our selfishness, or our worldliness, or our sin. It would not be as shocking as it is for us to invite the Holy Spirit to come into our churches when they are full of worldliness and selfishness and contention and envy and pride, and all that is unholy. But if the denizens of the lowest and vilest den of infamy should go to the purest and most Christlike woman asking her to go and dwell with them with the intention of putting away everything that was vile and evil and giving