And I will pray the Father, and He shall give you another Comforter, that He may abide with you for ever. – John 14:16

Christ Jesus, the Lord, is present in His Church by the Holy Spirit. The Holy Spirit is this day the representative of Christ in the midst of the Church, and it is in the power and the energy of the Holy Ghost that Christ is with us always and will be even to the end of the world. As God, Jesus is everywhere; as Man, He is only in heaven; as God and Man in one person, Mediator and Head of the Church, He is present with us by the Holy Ghost, the Comforter, whom the Father has sent in His name. It is by the working of the Spirit of God that Christ’s presence in the Church is manifested; and we are to expect no other presence than that: we have the spiritual divine presence of the second person of the blessed Trinity, and the presence of Christ Jesus also in the power of His representative on earth, the Holy Ghost. This presence, not a bodily but a spiritual presence, is the glory of the Church of God. When she is without Him, she is shorn of her strength; when she possesses Him all good things ensue. Brethren, if a church be without the Spirit of God in it, it may have a name to live, but it is dead, and, you know, that after death there follows corruption, corruption which breeds foulness and disease. Hence, those churches which have turned aside unto error, have not only lost all power to do good, but they have become obnoxious and the causes of great evil in the midst of the world. If any professing church abides not in Christ, it is cast forth as a branch and is withered; and while it is decaying, it is injurious, and there is need for the world’s welfare that it be utterly destroyed. We must have Christ in the church, or the body which was meant to be the medium of the greatest good becomes the source of the grossest evil. ~ C.H. Spurgeon

https://www.blueletterbible.org/comm/spurgeon_charles/sermons/1035.cfm