The word “paraclete” signifies one who takes up the cause of another. It is translated “Comforter” in reference to the Holy Spirit (John 14:16) and “advocate” in reference to the Lord Jesus (1 John 2:1). Christ in the glory is an advocate for a son of the Father if he should sin. He is the Paraclete in heaven while the Holy Spirit is the same on earth to secure the spiritual welfare of God’s children.
Concise Bible Dictionary