15 Therefore follows: “The Lord will commend His loving-kindness in the day-time; and in the night-time will He declare it”. In tribulation no man has leisure to hear: attend, when it is well with you; hear, when it is well with you; learn, when you are in tranquillity, the discipline of wisdom, and store up the word of God as you do food. For in tribulation every one must be profited by what he heard in the time of security. For in prosperity God “commends to you His mercy,” in case thou serve Him faithfully, for He frees you from tribulation; but it is “in the night” only that He “declares” His mercy to you, which He “commended” to you by day. When tribulation shall actually come, He will not leave you destitute of His help; He will show you that which He commended to you in the daytime is true. For it is written in a certain passage, “The mercy of the Lord is seasonable in the time of affliction, as clouds of rain in the time of drought.” “The Lord has commended His loving-kindness in the day-time, and in the night will He declare it.” He does not show that He is your Helper, unless tribulation come, from whence you must be rescued by Him who promised it to you “in the day-time.” Therefore we are warned to be like “the ant.” For just as worldly prosperity is signified by “the day,” adversity by the night, so again in another way worldly prosperity is expressed by “the summer,” adversity by the winter. And what is it that the ant does? She lays up in summer what will be useful to her in winter. Whilst therefore it is summer, while it is well with you, while you are in tranquillity, hear the word of the Lord. For how can it be that in the midst of these tempests of the world, you should pass through the whole of that sea, without suffering? How could it happen? To what mortal's lot has it fallen? If even it has been the lot of any, that very calm is more to be dreaded. “The Lord has commended His loving-kindness in the day-time, and in the night-time will He declare it.”...“There is with me prayer unto the God of my life.” This I make my business here; I who am the “hart thirsting and longing for the water-brooks,” calling to mind the sweetness of that strain, by which I was led on through the tabernacle even to the house of God; while this “corruptible body presses down the soul,” there is yet with me “prayer unto the God of my life.” For in order to making supplication unto God, I have not to buy anything from places beyond the sea; or in order that He may hear me, have I to sail to bring from a distance frankincense and perfumes, or have I to bring “calf or ram from the flock.” There is “with me prayer to the God of my life.” I have within a victim to sacrifice; I have within an incense to place on the altar; I have within a sacrifice wherewith to propitiate my God. “The sacrifice of God is a troubled spirit.” What sacrifice of a “troubled spirit” I have within, hear.
16. “I will say unto God, You are my lifter up. Why have You forgotten me?”. For I am suffering here, even as if You had forgotten me. But You are trying me, and I know that Thou dost but put off, not take utterly from me, what You have promised me. But yet, “Why have You forgotten me?” So cried our Head also, as if speaking in our name. “My God, my God, why have You forsaken me?” I will say unto God, “You are my lifter up; why have You forgotten me?”
17. “Why have You rejected me?” “Rejected” me, that is to say, from that height of the apprehension of the unchangeable Truth. “Why have You rejected me?” Why, when already longing for those things, have I been cast down to these, by the weight and burden of my iniquity? This same voice in another passage said, “I said in my trance” (i.e., in my rapture, when he had seen some great thing or other), “I said in my trance, I am cast out of the sight of Your eyes.” For he compared these things in which he found himself, to those toward which he had been raised; and saw himself cast out far “from the sight of God's eyes,” as he speaks even here, “Why have You rejected me? Why go I mourning, while mine enemy troubles me, while he breaks my bones?” Even he, my tempter, the devil; while offenses are everywhere on the increase, because of the abundance of which “the love of many is waxing cold.” When we see the strong members of the Church generally giving way to the causes of offense, does not Christ's body say, “The enemy breaks my bones”? For it is the strong members that are “the bones;” and sometimes even those that are strong sink under their temptations. For whosoever of the body of Christ considers this, does he not exclaim, with the voice of Christ's Body, “Why have You rejected me? Why go I mourning, while mine enemy troubles me, while he breaks my bones?”
You may see not my flesh merely, but even my “bones.” To see those who were thought to have some stability, giving way under temptations, so that the rest of the weak brethren despair when they see those who are strong succumbing; how great, my brethren, are the dangers!
18. “They who trouble me cast me in the teeth.” Again that voice! “While they say daily unto me, Where is your God?”. And it is principally in the temptations of the Church they say this, “Where is your God?” How much was this cast in the teeth of the Martyrs! Those men so patient and courageous for the name of Christ, how often was it said to them, “Where is your God?” “Let Him deliver you, if He can.” For men saw their torments outwardly; they did not inwardly behold their crowns! “They who trouble me cast me in the teeth, while they say daily unto me, Where is your God?” And on this account, seeing “my soul is disquieted on account of myself,” what else should I say unto it than those words:
“Why art you cast down, O my soul; and why do you disquiet me?”. And, as it seems to answer, “Would you not have me disquiet you, placed as I am here in so great evils? Would you have me not disquiet you, panting as I am after what is good, thirsting and labouring as I am for it?” What should I say, but,
“Hope thou in God; for I will yet confess unto Him”. He states the very words of that confession; he repeats the grounds on which he fortifies his hope. “He is the health of my countenance, and my God.”
Source: The Enarrations, or Expositions, on the Psalms (New Advent)