Psalms 56:11

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? […]

In God have I put my trust. This and the former verse are evidently the chorus of the Psalm. We cannot be too careful of our faith, or see too sedulously that it is grounded on the Lord alone. I will not be afraid what man can do unto me. Faith has banished fear. He views his foes in their most forcible character, calling them not flesh, but indicating them as man, yet he dreads them not; though the whole race were his enemies he would not be afraid now that his trust is stayed on God.

In God have I put my trust. This and the former verse are evidently the chorus of the Psalm. We cannot be too careful of our faith, or see too sedulously that it is grounded on the Lord alone. I will not be afraid what man can do unto me. Faith has banished fear. He views his foes in their most forcible character, calling them not flesh, but indicating them as man, yet he dreads them not; though the whole race were his enemies he would not be afraid now that his trust is stayed on God. He is not afraid of what they threaten to do, for much of that they cannot do; and even what is in their power, what they can do, he defies with holy daring. He speaks for the future, "I will not, "for he is sure that the security of the present will suffice for days to come.

In God have I put my trust - The sentiment in this verse is the same as in Psa 56:6, except that the word “man” is used here instead of “flesh.” The meaning, however, is the same. The idea is, that he would not be afraid of what “any man” - any human being - could do to him, if God was his friend.