Psalms 56:10

Let us therefore love God, brethren, purely and chastely. There is not a chaste heart, if God for reward it worships. How so? Reward of the worship of God shall not we have? We shall have evidently, but it is God Himself whom we worship. Himself for us a reward shall be, because "we shall see Him as He is." [1 John 3:2] Observe that a reward you shall obtain....I will tell you, brethren: in these human alliances consider a chaste heart, of what sort it is towards God: certainly human alliances are of such sort, that a man does not love his wife, that loves her because of her portion: a woman her husband does not chastely love, that for these reasons loves him, because something he has given, or because much he has given. Both a rich man is a husband, and one that has become a poor man is a husband. How many men proscribed, by chaste wives have been the more beloved! Proved have been many chaste marriages by the misfortunes of husbands: that the wives might not be supposed to love any other object more than their husband, not only have they not forsaken, but the more have they obeyed. If therefore a husband of flesh freely is loved, if chastely he is loved; and a wife of flesh freely is loved, if chastely she is loved; in what manner must God be loved, the true and truth-speaking Husband of the soul, making fruitful unto the offspring of everlasting life, and not suffering us to be barren? Him, therefore, so let us love, as that any other thing besides Himself be not loved: and there takes place in us that which we have spoken of, that which we have sung, because even here the voice is ours: "In whatsoever day I shall have called upon You, behold, I have known that my God are You." This is to call upon God, freely to call upon Him. Furthermore, of certain men has been said what? […]

We heard the readings of the Scriptures while they were being recited. That is the material that has been given me to talk about. That is what I have to understand, that is from what I have to sow what wisdom I have gotten, with the help of him in whose hand, as it is written, are both "we and our words." Nor is it simply pointless, what is written somewhere else: "I will praise the word, in the Lord I will praise the word." What is praised in the Lord is what the Lord gives. So although I am fairly feeble, I am for all that his instrument. I grasp what I can; I share without grudging what I grasp. May he make good in your minds whatever I have done less well, because even what I do manage to convey to your ears is not worth anything, is it, unless he does the whole work in your minds?

In God will I praise his word,....

In God will I praise his word. Now comes the thanksgiving. He is a wretch who, having obtained help, forgets to return a grateful acknowledgment. The least we can do is to praise him from whom we receive such distinguished favours. Does David here mean "by God's grace I will praise him"? If so, he shows us that all our emotions towards God must be in God, produced by him and presented as such. Or does he mean, "that which in God is most the object of my praise is his word, and the faithfulness with which he keeps it"? If so, we see how attached our hearts should be to the sure word of promise, and especially to him who is the Word incarnate. The Lord is to be praised under every aspect, and in all his attributes and acts, but certain mercies peculiarly draw out our admiration towards special portions of the great whole. That praise which is never special in its direction cannot be very thoughtful, and it is to be feared cannot be very acceptable. In the Lord will I praise his word. He delights to dwell on his praise, he therefore repeats his song. The change by which he brings in the glorious name of Jehovah is doubtless meant to indicate that under every aspect he delights in his God and in his word.

, Psa 56:11 See on Psa 56:4 (note), where the same words occur.