The Holy Spirit is undeniably the least understood part of deity, yet he is said to live within us, a gift we receive when we are baptized. He has several names - Comforter, Spirit of Truth, Helper, and even Holy Ghost in early English translations.
Genesis 1:2, John 14:16-17, John 14:26, John 16:7-15, 1 Corinthians 12:3-14, Ephesians 4:4, Mark 1:10, Acts 2:2, 2 Corinthians 3:17, John 4:24, 2 Samuel 23:1-2, Psalms 51:11, 2 Peter 1:21, Joel 2:28-29, Acts 2:16-21
Helper, Spirit, Holy Spirit, Comforter, Godhead, Triune, Spirit Of Truth, Holy Spirit General, Spirit Of The Lord, Parakletos, Pneuma
Christian/Church Of Christ