<!--<span class="stiki"></span>-->Ephesians 6:14
“Stand therefore, having girded your loins with truth.”
Having drawn up this army, and roused their zeal—for both these things were requisite, both that they should be drawn up in array and subject to each other, and that their spirit should be aroused—and having inspired them with courage, for this was requisite also, he next proceeds also to arm them. For arms had been of no use, had they not been first posted each in his own place, and had not the spirit of the soldier's soul been roused; for we must first arm him within, and then without.
Now if this is the case with soldiers, much more is it with spiritual soldiers. Or rather in their case, there is no such thing as arming them without, but everything is within. He has roused their ardor, and set it on fire, he has added confidence. He has set them in due array. Observe how he also puts on the armor. “Stand therefore,” says he. The very first feature in tactics is, to know how to stand well, and many things will depend upon that. Hence he discourses much concerning standing, saying also elsewhere, “Watch ye, stand fast.” And again, “So stand fast in the Lord.” And again, “Let him that thinks he stands, take heed lest he fall.” And again, “That ye may be able, having done all, to stand.” Doubtless then he does not mean merely any way of standing, but a correct way, and as many as have had experience in wars know how great a point it is to know how to stand. For if in the case of boxers and wrestlers, the trainer recommends this before anything else, namely, to stand firm, much more will it be the first thing in warfare, and military matters.
The man who, in a true sense, stands, is upright; he stands not in a lazy attitude, not leaning upon anything. Exact uprightness discovers itself by the way of standing, so that they who are perfectly upright, they stand. But they who do not stand, cannot be upright, but are unstrung and disjointed. The luxurious man does not stand upright, but is bent; so is the lewd man, and the lover of money. He who knows how to stand will from his very standing, as from a sort of foundation, find every part of the conflict easy to him.
“Stand therefore,” says he, “having girded your loins with truth.”
He is not speaking of a literal, physical girdle, for all the language in this passage he employs in a spiritual sense. And observe how methodically he proceeds. First he girds up his soldier. What then is the meaning of this? The man that is loose in his life, and is dissolved in his lusts, and that has his thoughts trailing on the ground, him he braces up by means of this girdle, not suffering him to be impeded by the garments entangling his legs, but leaving him to run with his feet well at liberty. “Stand therefore, having girded your loins,” says he. By the “loins” here he means this; just what the keel is in ships, the same are the loins with us, the basis or groundwork of the whole body: for they are, as it were, a foundation, and upon them as the schools of the physicians tell you, the whole frame is built. So then in “girding up the loins” he compacts the foundation of our soul; for he is not of course speaking of these loins of our body, but is discoursing spiritually: and as the loins are the foundation alike of the parts both above and below, so is it also in the case of these spiritual loins. Oftentimes, we know, when persons are fatigued, they put their hands there as if upon a sort of foundation, and in that manner support themselves; and for this reason it is that the girdle is used in war, that it may bind and hold together this foundation, as it were, in our frame; for this reason too it is that when we run we gird ourselves. It is this which guards our strength. Let this then, says he, be done also with respect to the soul, and then in doing anything whatsoever we shall be strong; and it is a thing most especially becoming to soldiers.
Source: Homilies on Ephesians (New Advent)