Ambrosiaster : Just as it is the glory of a doctor if he cures many, so it is to the praise of God's glory when many are won for the faith. And so it is part of God's glory to have called the Gentiles that they might obtain their salvation through the faith promised to the Jews. The Gentiles have as a sign of their redemption and future inheritance the Holy Spirit, given at baptism. — EPISTLE TO THE Ephesians 1.14 Jerome : A guarantee (arrabōn, "earnest") is not the same as a token or pledge. For a guarantee is given as an affidavit and bond for a future purchase. But a pledge … is an expression of a present reciprocal transaction. Thus when the money is returned the pledge is restored by the creditor to the one who has repaid the debt.… So from the guarantee the majestic scope of the future inheritance may be grasped. — Commentary on Ephesians 1:14 John Chrysostom : It is an earnest, however, of what? of "The redemption of God's own possession." For our absolute redemption takes place then. For now we have our life in the world, we are liable to many human accidents, and are living amongst ungodly men. But our absolute redemption will be then, when there shall be no sins, no human sufferings, when we shall not be indiscriminately mixed with all kinds of people. At present, however, there is but an earnest, because at present we are far distant from these blessings. Yet is our citizenship not upon earth; even now we are out of the pale of the things that are here below. Yes, we are sojourners even now. "Unto the praise of His glory." This he adds in immediate connection. And why? Because it would serve to give those who heard it full assurance. Were it for our sake only, he means to say, that God did this, there might be some room for misgiving. But if it be for His own sake, and in order to display His goodness, he assigns, as a sort of witness, a reason why these things never possibly could be otherwise. We find the same language everywhere applied to the case of the Israelites. "Do Thou this for us for Thy Name's sake;" (Ps. cix: 21.) and again, God Himself said, "I do it for Mine own sake;" (Isa. xlviii: II.) and so Moses, "Do it, if for nothing else, yet for the glory of Thy Name." This gives those who hear it full assurance; it relieves them to be told, that whatever He promises, for His own goodness' sake He will most surely perform. — Homily on Ephesians 2 Tertullian : What shall we say then? Has not the flesh even now (in this life) the spirit by faith? so that the question still remains to be asked, how it is that the animate (or natural) body can be said to be sown? Surely the flesh has received even here the spirit-but only its "earnest; " whereas of the soul (it has received) not the earnest, but the full possession. — On the Resurrection of the Flesh Theodoret of Cyrus : He shows how great are our expectations. This grace is already being given, through which miracles were worked: the dead were raised, lepers cleansed and demons driven out. All of these and similar things have the status of a pledge, so it will become obvious that the faithful will enjoy in the future a much greater grace. — Interpretation of the Epistle to the Ephesians 1.14