One and the same grace is from the Father in the Son, as the light of the sun and of the radiance is one, and as the sun's illumination is effected through the radiance; and so too when he prays for the Thessalonians, St. Paul in saying, 'Now God Himself even our Father and the Lord Jesus Christ, may He direct our way to you' (I Thes. 3:11), has guarded the unity of the Father and of the Son. For he has not said, 'May they direct,' as if a double grace were given from two Sources, This and That, but 'May He direct,' to show that the Father gives it through the Son.
St. Athanasius