(3) But there is a still deeper reason yet why the Holy Spirit is called the Spirit of Christ, and that is _because it is His work to form Christ as a living presence within us_. In Eph. iii. 16, 17, the Apostle Paul prays to the Father that He would grant to believers according to the riches of His glory to be strengthened with might by His Spirit in the inner man, that Christ may dwell in their hearts by faith. This then is the work of the Holy Spirit, to cause Christ to dwell in our hearts, to form the living Christ within us. Just as the Holy Spirit literally and physically formed Jesus Christ in the womb of the Virgin Mary (Luke i. 35) so the Holy Spirit spiritually but really forms Jesus Christ within our hearts to-day. In John xiv. 16-18, Jesus told His disciples that when the Holy Spirit came that He Himself would come, that is, the result of the coming of the Holy Spirit to dwell in their hearts would be the coming of Christ Himself. It is the privilege of every believer in Christ to have the living Christ formed by the power of the Holy Spirit in his own heart and therefore the Holy Spirit who thus forms Christ within the heart is called the Spirit of Christ. How wonderful! How glorious is the significance of this name. Let us ponder it until we understand it, as far as it is possible to understand it, and until we rejoice exceedingly in the glory of it. VII. _The Spirit of Jesus Christ._ The Holy Spirit is called _the Spirit of Jesus Christ_ in Phil. i. 19, “For I know that this shall turn to my salvation through your prayer, and the supply of _the Spirit of Jesus Christ_.” The Spirit is not merely the Spirit of the eternal Word but the Spirit of the Word incarnate. Not merely the Spirit of Christ, but the Spirit _of Jesus Christ_. It is the Man Jesus exalted to the right hand of the Father who receives and sends the Spirit. So we read in Acts ii. 32, 33, “This _Jesus_ hath God raised up, whereof we all are witnesses. Therefore being by the right hand of God exalted, and having received of the Father the promise of the Holy Ghost, He hath shed forth this, which ye now see and hear.” VIII. _The Spirit of Jesus._ The Holy Spirit is called _the Spirit of Jesus_ in Acts xvi. 6, 7, R. V., “And they went through the region of Phrygia and Galatia, having been forbidden of the Holy Ghost to speak the word in Asia; and when they were come over against Mysia, they assayed to go into Bithynia; and the _Spirit of Jesus_ suffered them not.” By the using of this name, “_The Spirit of Jesus_” the thought of the relation of the Spirit to the _Man Jesus_ is still more clear than in the name preceding this, the Spirit of Jesus Christ. IX. _The Spirit of His Son._