It has been the usual practice of God's people, when they have been in distress and ready to fall into despair, to help themselves by recollecting their experiences, and reviving them, considering the days of old, and the years of ancient times (Ps. lxxvii. 5), and pleading with God in prayer, as he is pleased sometimes to plead them with himself. Isa. lxiii. 11, Then he remembered the days of old. This is that which the prophet does here, and he looks as far back as the first forming of them into a people, when they were brought by miracles out of Egypt, a house of bondage, through the wilderness, a land of drought, into Canaan, then possessed by mighty nations. He that thus brought them at first into Canaan, through so much difficulty, can now bring them thither again out of Babylon, how great soever the difficulties are that lie in the way. Those works of wonder, wrought of old, are here most magnificently described, for the greater encouragement to the faith of God's people in their present straits.