But what is the “preparation of the Gospel”? Let us hearken to what John says, “Make ready the way of the Lord, make His paths straight.” But again there is need also of another “preparation” after baptism, so that we may do nothing unworthy of “peace.” And then, since the feet are usually a token of the way of life, hence he is constantly exhorting in this language, “Look, therefore, carefully how ye walk.” On this account, he would say, let us exhibit a practice and example worthy of the Gospel; that is, make our life and conduct pure. The good tidings of peace have been proclaimed to you, give to these good tidings a ready way; since if you again become enemies, there is no more “preparation of peace.” Be ready, be not backward to embrace this peace. As you were ready and disposed for peace and faith, so also continue. The shield is that which first receives the assaults of the adversary, and preserves the armor uninjured. So long then as faith be right and the life be right, the armor remains uninjured.
He discourses, however, much concerning faith, but most especially in writing to the Hebrews, as he does also concerning hope. Believe, says he, in the good things to come, and none of this armor shall be injured. In dangers, in toils, by holding out your hope and your faith to protect you, you will preserve your armor uninjured. “He that comes to God must believe that He is, and that He is a rewarder of them that seek after Him.” Faith is a shield; but wherever there are quibbles, and reasonings, and scrutinizings, then is it no longer a shield, but it impedes us. Let this our faith be such as shall cover and screen the whole frame. Let it not then be scanty, so as to leave the feet or any other part exposed, but let the shield be commensurate with the whole body.
“Fiery darts.” For many doubtful reasonings there are, which set the soul, as it were, on fire, many difficulties, many perplexities, but all of them faith sets entirely at rest; many things does the devil dart in, to inflame our soul and bring us into uncertainty; as, for example, when some persons say, “Is there then a resurrection?” “Is there a judgment?” “Is there a retribution?” “But is there faith?” the apostle would say, “you shall with it quench the darts of the devil. Has any base lust assaulted you? Hold before you your faith in the good things to come, and it will not even show itself, yea, it will perish.” “All the darts”; not some quenched, and others not. Hearken to what Paul says, “For I reckon that the sufferings of this present time are not worthy to be compared with the glory that shall be revealed to us-ward.” Do you see how many darts the righteous quenched in those days? Seems it not to you to be “fiery darts,” when the patriarch burned with inward fire, as he was offering up his son? Yea, and other righteous men also have quenched “all his darts.” Whether then they be reasonings that assault us, let us hold out this; or whether they be base desires, let us use this; or whether again labors and distresses, upon this let us repose. Of all the other armor, this is the safeguard; if we have not this, they will be quickly pierced through. “Withal,” says he, “taking up the shield of faith.” What is the meaning of “withal”? It means both “in truth,” and “in righteousness,” and “in the preparation of the gospel”; that is to say, all these have need of the aid of faith.
And therefore he adds further, “and take the helmet of salvation”; that is to say, finally by this shall you be able to be in security. To receive the helmet of salvation is to escape the peril. For as the helmet covers the head perfectly in every part, and suffers it not to sustain any injury, but preserves it, so also does faith supply alike the place of a shield, and of a helmet to preserve us. For if we quench his darts, quickly shall we receive also those saving thoughts that suffer not our governing principle to sustain any harm; for if these, the thoughts that are adverse to our salvation, are quenched, those which are not so, but which contribute to our salvation, and inspire us with good hopes, will be generated within us, and will rest upon our governing principle, as a helmet does upon the head.
And not only this, but we shall take also “the sword of the Spirit,” and thus not only ward off his missiles, but smite the devil himself. For a soul that does not despair of herself, and is proof against those fiery darts, will stand with all intrepidity to face the enemy, and will cleave open his breastplate with this very sword with which Paul also burst through it, and “brought into captivity his devices”; he will cut off and behead the serpent.
“Which is the word of God.”
By the “word of God” in this place, he means on the one hand the ordinance of God, or the word of command; or on the other that it is in the Name of Christ. For if we keep his commandments, by these we shall kill and slay the dragon himself, “the crooked serpent.” And as he said, “You shall be able to quench the fiery darts of the evil one”; that he might not puff them up, he shows them, that above all things they stand in need of God; for what does he say?
“With all prayer and supplication,” he says, these things shall be done, and you shall accomplish all by praying. But when you draw near, never ask for yourself only: thus shall you have God favorable to you.
“With all prayer and supplication, praying at all seasons in the Spirit, and watching thereunto in all perseverance for all the saints.” Limit it not, I say, to certain times of the day, for hear what he is saying; approach at all times; “pray,” says he, “without ceasing.” Have you never heard of that widow, how by her importunity she prevailed? Have you never heard of that friend, who at midnight shamed his friend into yielding by his perseverance? Have you not heard of the Syrophœnician woman, how by the constancy of her entreaty she called forth the Lord's compassion? These all of them gained their object by their importunity.
“Praying at all seasons,” says he, “in the Spirit.”
That is to say, let us seek for the things which are according to God, nothing of this world, nothing pertaining to this life.
Therefore, is there need not only that we “pray without ceasing,” but also, that we should do so “watching—and watching,” says he, “thereunto.” Whether he is here speaking of vigils; or of the wakefulness of the soul, I admit both meanings. Do you see how that Canaanitish woman watched unto prayer? And though the Lord gave her no answer, nay, even shook her off, and called her a dog, she said, “Yea, Lord: for even the dogs eat of the crumbs which fall from their masters' table”, and desisted not until she obtained her request. How, too, did that widow cry, and persist so long, until she was able to shame into yielding that ruler, that neither feared God, nor regarded man? And how, again, did the friend persist, remaining before the door in the dead of night, till he shamed the other into yielding by his importunity, and made him arise. This is to be watchful.
Source: Homilies on Ephesians (New Advent)