24.  He preached concerning Christ in the Prophets; He wrought in the Apostles; He to this day seals the souls in Baptism.  And the Father indeed gives to the Son; and the Son shares with the Holy Ghost.  For it is Jesus Himself, not I, who says, All things are delivered unto Me of My Father Matt. xi. 27.; and of the Holy Ghost He says, When He, the Spirit of Truth, shall come, and the rest.…He shall glorify Me; for He shall receive of Mine, and shall shew it unto you John xvi. 13, 14..  The Father through the Son, with the Holy Ghost, is the giver of all grace; the gifts of the Father are none other than those of the Son, and those of the Holy Ghost; for there is one Salvation, one Power, one Faith; One God, the Father; One Lord, His only-begotten Son; One Holy Ghost, the Comforter.  And it is enough for us to know these things; but inquire not curiously into His nature or substance In regard to the caution with which St. Cyril here speaks, we must remember that the heresy of Macedonius had not yet given occasion to the formal discussion and determination of the “nature and substance” of the Holy Ghost.:  for had it been written, we would have spoken of it; what is not written, let us not venture on; it is sufficient for our salvation to know, that there is Father, and Son, and Holy Ghost.