A promise is nothing unless I have good security that it shall be fulfilled. It is in vain for men to promise largely unless their fulfillment shall be as large as their promise, for the largeness of their promise is just the largeness of deception. But here every word of God is true.
God has issued no more notes for the bank of heaven than he can cash in an hour if he wills. There is enough bullion in the vaults of Omnipotence to pay off every bill that ever shall be drawn by the faith of man or the promises of God. Now look at this one—”As thy days, so shall thy strength be” [Deut 33:25].
Beloved, God has a strong reserve with which to pay off this promise; for is he not himself omnipotent, able to do all things? Believer, till thou canst drain dry the ocean of omnipotence, till thou canst break into pieces the towering mountains of almighty strength, thou never needest to fear. Until thine enemy can stop the course of a whirlwind with a reed, till he can twist the hurricane from its path by a word of his puny lip, thou needest not think that the strength of man shall ever be able to overcome the strength which is in thee, namely, the strength of God. Whilst the earth’s huge pillars stand, thou hast enough to make thy faith firm.
The same God who guides the stars in their courses, who directs the earth in its orbit, who feeds the burning furnace of the sun, and keeps the stars perpetually burning with their fires—the same God has promised to supply thy strength. While he is able to do all these things, think not that he shall be unable to fulfill his own promise. Remember what he did in the days of old, in the former generations. Remember how he spoke and it was done; how he commanded, and it stood fast. Do you not see him in the black eternity? When there was nothing but grim darkness, there he stood—the mighty Artificer: upon the anvil there he cast a hot mass of flame, and hammering it with his own ponderous arm, each spark that flew from it made a world; there those sparks are glittering now, the offspring of the anvil of the eternal purposes, and the hymned of his own majestic might.
And shall he, that created the world, grow weary? Shall he fail? Shall he break his promises for want of strength? He hangeth the world upon nothing; he fixed the pillars of heaven in silver sockets of light and thereon he hung the golden lamps, the sun and the moon, and shall he that did all this be unable to support his children? Shall he be unfaithful to his word for want of power in his arm or strength in his will?
Remember again, thy God, who has promised to be thy strength, is the God who upholdeth all things by the power of his hand.
-C.H. Spurgeon, “As Thy Days, So Shall Thy Strength Be”
MAGNIFY CHRIST 