Ambrosiaster : All thanksgiving for our salvation is to be given only to God. He extends his mercy to us so as to recall us to life precisely while we are straying, without looking for the right road. And thus we are not to glory in ourselves but in God, who has regenerated us by a heavenly birth through faith in Christ. — EPISTLE TO THE Ephesians 2.10 Gaius Marius Victorinus : The fact that you Ephesians are saved is not something that comes from yourselves. It is the gift of God. It is not from your works, but it is God's grace as God's gift, not from anything you have deserved. Our works are one thing, what we deserve another. Hence he distinguishes the two phrases "not from yourselves" and "not from works." Remember that there are faithful works that ought to be displayed daily in services to the poor and other good deeds. — EPISTLE TO THE Ephesians 1.2.9 John Chrysostom : "That no man should glory." That he may excite in us proper feeling touching this gift of grace. "What then?" saith a man, "Hath He Himself hindered our being justified by works?" By no means. But no one, he saith, is justified by works, in order that the grace and loving-kindness of God may be shown. He did not reject us as having works, but as abandoned of works He hath saved us by grace; so that no man henceforth may have whereof to boast. And then, lest when thou hearest that the whole work is accomplished not of works but by faith, thou shouldest become idle, observe how he continues. — Homily on Ephesians 4