Which Gospel emphasizes the role of the Holy Spirit as the Comforter or Advocate?

The Gospel that emphasizes the role of the Holy Spirit as the Comforter or Advocate is the Gospel of John. In the Gospel of John, Jesus spends a significant amount of time teaching about the Holy Spirit and the role He will play in the lives of His followers.
In John 14:16-17, Jesus says, "And I will ask the Father, and He will give you another Advocate to help you and be with you forever— the Spirit of truth." Here, Jesus refers to the Holy Spirit as the "Advocate," emphasizing His role as a helper and guide for believers. Jesus goes on to say that the world cannot receive the Holy Spirit because it does not know Him, but that His disciples will know Him because the Holy Spirit will be in them.
Throughout the Gospel of John, Jesus continues to teach about the Holy Spirit and His work. In John 16:7, Jesus says, "...it is for your good that I am going away. Unless I go away, the Advocate will not come to you; but if I go, I will send Him to you." Here, Jesus emphasizes that the Holy Spirit's coming is a blessing and that His disciples will benefit from His presence.
In summary, the Gospel of John emphasizes the role of the Holy Spirit as the Comforter or Advocate. Jesus teaches about the Holy Spirit as a constant companion, helper, and guide for believers. The Holy Spirit's role is to bring truth, comfort, and support to believers in their journey of faith.