The solemn practical truth of the text is that God can do the most terrible things and the most gentle; that power belongeth unto God and also mercy; that He is either glorious as heaven or fearful as hell.
I. Look at the doctrine of the text in relation to bad men who pride themselves upon their success and their strength. The doctrine of the text is that there is a Power beyond man's, and that nothing is held safely which is not held by consent of that Power. As he would be infinitely foolish who should build his house without thinking of the natural forces that will try its strength, so is he cursed with insanity who builds his character without thinking of the fire with which God will try every man's work of what sort it is. The so-called success of the bad man has yet to stand the strain of Divine trial. Though his strength be as a mountain, it shall be wasted; though it be as a hill it shall be blown away, and the world shall see how poorly they build who build only for the light and quietness of summer. Remember, we are not stronger than our weakest point, and that true wisdom binds us to watch even the least gate that is insufficient or insecure.
II. Look at the doctrine of the text as an encouragement to all men who work under the guidance of God. God declares Himself gentle to those who truly need Him. He promises nothing to the self-sufficient; He promises much to the needy. The text shows the principle on which Divine help is given to men, the principle of conscious need and of willingness to be guided. A true apprehension of this doctrine will give us a new view of daily providences, viz., that men who are apparently most destitute may in reality be most richly enjoying the blessings of God. Clearly, we are not to judge human life by outward conditions. Blindness may not be merely so much defect, it may be but another condition of happiness. It is becausewe are blind that He will lead us. It is becausewe are weak that He will carry us. It is becausewe have nothing that He offers to give us all things.
Parker, City Temple,1870, p. 277.
References: Isaiah 42:16. Preacher's Monthly,vol. ix., p. 32; Spurgeon, Sermons,vol. xiv., No. 847, vol. xxii., No. 1310.