28. If the knowledge of the only true God confers the same benefit as the knowledge of the Son and of the Spirit, why do you sever the Son and the Spirit from the honour of the true God, when you do not sever Him from conferring the benefit? For of necessity you must either believe that this is the greatest gift of the only true Godhead, and will confess the only true Godhead as of the Father, so also of the Son and of the Holy Spirit; or if you say that he, too, can give life eternal who is not true God, it will happen that you derogate rather from the Father, Whose work you do not consider to be the chief work of the only true Godhead, but one to be compared to the work of a creature.