Charles H. Spurgeon on Psalms 85:8

I will hear what God the LORD will speak. When we believe that God hears us, it is but natural that we should be eager to hear him. Only from him can come the word which can speak peace to troubled spirits; the voices of men are feeble in such a case, a plaister far too narrow for the sore; but God's voice is power, he speaks and it is done, and hence when we hear him our distress is ended. Happy is the suppliant who has grace to lie patiently at the Lord's door, and wait until his love shall act according to its old wont and chase all sorrow far away. For he will speak peace unto his people, and to his saints. Even though for a while his voice is stern with merited rebuke, he will not always chide, the Great Father will reassume his natural tone of gentleness and pity. The speaking of peace is the peculiar prerogative of the Lord Jehovah, and deep, lasting, ay, eternal, is the peace he thus creates. Yet not to all does the divine word bring peace, but only to his own people, whom he means to make saints, and those whom he has already made so. But let them not turn again to folly. For if they do so, his rod will fall upon them again, and their peace will be invaded. Those who would enjoy communion with God must be jealous of themselves, and avoid all that would grieve the Holy Spirit; not only the grosser sins, but even the follies of life must be guarded against by those who are favoured with the delights of conscious fellowship. We serve a jealous God, and must needs therefore be incessantly vigilant against evil. Backsliders should study this verse with the utmost care, it will console them and yet warn them, draw the back to their allegiance, and at the same time inspire them with a wholesome fear of going further astray. To turn again to folly is worse than being foolish for once; it argues wilfulness and obstinacy, and it involves the soul in sevenfold sin. There is no fool like the man who will be a fool cost him what it may.