641 O let the heavens be broken open and come down, so that the mountains may be shaking before you, As when fire puts the brushwood in flames, or as when water is boiling from the heat of the fire: to make your name feared by your haters, so that the nations may be shaking before you; 2 While you do acts of power for which we are not looking, and which have not come to the ears of men in the past. 3 The ear has not had news of, or the eye seen, ... any God but you, working for the man who is waiting for him.
Matthew Henry's Commentary on Isaiah 64:1-3
Commentary on Isaiah 64:1-5
(Read Isaiah 64:1-5)
They desire that God would manifest himself to them and for them, so that all may see it. This is applicable to the second coming of Christ, when the Lord himself shall descend from heaven. They plead what God had used to do, and had declared his gracious purpose to do, for his people. They need not fear being disappointed of it, for it is sure; or disappointed in it, for it is sufficient. The happiness of his people is bound up in what God has designed for them, and is preparing for them, and preparing them for; what he has done or will do. Can we believe this, and then think any thing too great to expect from his truth, power, and love? It is spiritual and cannot be comprehended by human understanding. It is ever ready. See what communion there is between a gracious God and a gracious soul. We must make conscience of doing our duty in every thing the Lord our God requires. Thou meetest him; this speaks his freeness and forwardness in doing them good. Though God has been angry with us for our sins, and justly, yet his anger has soon ended; but in his favour is life, which goes on and continues, and on that we depend for our salvation.