Procession of the Holy Spirit

The procession of the Holy Spirit is "the relation which the third person sustains to the first and second, wherein by an eternal and necessary, i.e., not voluntary, act of the Father and the Son, their whole identical divine essence, without alienation, division, or change, is communicated to the Holy Ghost" - A. A. Hodge, Outlines in Theology, p. 189

"There is, in fact, only one verse in Scripture which is commonly put forward to prove this doctrine, and it is found in John 15:26: 'But when the Comforter is come, whom I will send unto you from the Father, even the Spirit of truth, which proceedeth from the Father, he shall bear witness of me.' " - Loraine Boettner

See also