Evidently this is not the teaching of the Book of Exodus. For it is here, in this revelation of the Supreme, that we first hear of a nation as being His: “I have seen the affliction of My people which is in Egypt ... and I have come down to bring them into a good land.” They were all baptized into Moses in the cloud and in the sea. Yet their carcases fell in the wilderness. And these things were written for our learning. The immutability, which suffers no shock when we enter _into_ the covenant, remains unshaken also if we depart from the living God. The sun shines alike when we raise the curtain and when we drop it, when our chamber is illumined and when it is dark. The immutability of God is not in His operations, for sometimes He gave His people into the hand of their enemies, and again He turned and helped them. It is in His nature, His mind, in the principles which guide His actions. If He had not chastened David for his sin, then, by acting as before, He would have been other at heart than when He rejected Saul for disobedience and chose the son of Jesse to fulfil all His word. The wind has veered, if it continues to propel the vessel in the same direction, although helm and sails are shifted. Such is the Pauline doctrine of His immutability. “If we endure we shall also reign with Him: if we shall deny Him, He also will deny us,”—and such is the necessity of His being, for we cannot sway Him with our changes: “if we are faithless, He abideth faithful, for He cannot deny Himself.” And therefore it is presently added that “the firm foundation of the Lord standeth sure, having” not only “this seal, that the Lord knoweth those that are His,”—but also this, “Let every one that nameth the name of the Lord depart from unrighteousness” (2 Tim. ii. 12, 13, 19, R.V.). The Lord knew that Israel was His, yet for their unrighteousness He sware in His wrath that they should not enter into His rest. It follows from all this that the new name of God was no academic subtlety, no metaphysical refinement of the schools, unfitly revealed to slaves, but a most practical and inspiring truth, a conviction to warm their blood, to rouse their courage, to convert their despair into confidence and their alarms into defiance. They had the support of a God worthy of trust. And thenceforth every answer in righteousness, every new disclosure of fidelity, tenderness, love, was not an abnormal phenomenon, the uncertain grace of a capricious despot; no, its import was permanent as an observation of the stars by an astronomer, ever more to be remembered in calculating the movements of the universe. In future troubles they could appeal to Him to awake as in the ancient days, as being He who “cut Rahab and wounded the Dragon.” “I am the Lord, I change not, therefore ye sons of Jacob are not consumed.”