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This is a figurative expression, and it indicates that man is a creature of vast spiritual capacity. Men are rarely in full consciousness of that deep, strong, original aptitude of human nature for the things of God. For sin has so deeply impaired our nature, that atrophy and nausea have fallen upon our spiritual faculties, and our moral perceptions have become gross and insensible. But the faculties are in us. The ideas of God and duty, the fitness for responsibility, the spring of the inner nature towards immortal life, the sentiment of love, with its boundless range — these inhere in the soul of every man. They may lie dormant in the inner caves of our personal existence, unused and entrusted by guilt, but they are integral qualities. Nothing — riot guilt, not neglect, not the insane denial of these Divine qualities, not even the suicide's hand, can cast out of our being these exalted powers and prerogatives. There is a section of our being "which cannot, but by annihilating, die." It is a majestic fact, and it brings with it the most awful responsibility that we are beings of a constitution akin to the Divine, and that we shall live for ever! Now, the reference of the text, in its first section, is to this quality of our nature. When God says, "Open thy mouth wide," He refers to an actual capacity in us, latent though it be, which, quickened by the Spirit, may reach up to heaven in lofty aspirations, and take in all the things of God. So, too, the other portion of the text, for it has two terms: "open thy mouth wide," is one, and "I will fill it," the other. The promise here given us is equally as significant with regard to our nature as is the command. It is a declaration that when the immortal demands of our inner being are once quickened into life, that there is but one Being in the universe who can answer and supply them. Hence the entreaty, "Open thy mouth wide," etc., because God only can fill these infinite needs of the immortal soul. What, then, is the reach you are going to make in Divine holiness? How far will you stretch forth in godly desires and aspirations? First of all, if you would attain to a lofty, grand pre-eminence of spiritual growth, fix it in your minds to be men and women of a high order of morals. Not as though the advice be given to begin with morality. God forbid! The beginning of all true soul-life is in the spiritual; but, assuming that you are spiritual, that you have repented and believed, and that, having entered upon the Christian life, led by the Spirit of grace, you are anxious to reach the stature of perfect men in Christ. Lay the foundations of your piety deep in the purest morals! But observe, next, that another stretch of the soul to high spiritual excellence is to be attained by the exercise of duty, that is, the doing of good works. Practical goodness bears somewhat the same relation to eminent piety that husbandry does to the production of good crops, or the care of the gardener to the growth of beautiful flowers. It is, under God, the actual uplifting of the soul from one degree of holiness to another. It is the cultivation of the Christian graces; and, observe, all true cultivation tends to growth and expansion. By doing good to others for Christ's sake, we expand our own being; we multiply the force of our sympathies and affections; we reduplicate the power of our loving energy. And so it will follow that obedience to the text will show itself, in the purposed rise of the soul to a high spirituality. This topic is left for the last, because it is the most important; it is the very base of all spiritual acquisition. In the domain of the spirit, spiritual things, spiritual aims, spiritual efforts, spiritual longings, are the foremost of all things. So much, then, for the ideal or principle descriptive of what is spiritual life. And now we can turn to the evidence that is to be found in ourselves that we have this principle implanted in us. That evidence discovers itself in those characteristic spiritual acts of the soul, into which, as sons of God, the saints are led by the Spirit of God. And here the whole field of saintly life lies spread out before us, so that we cannot err. All of its rich productiveness is the fruit of the Spirit. It brings, to our sight, in exceeding brilliancy, the faith and prayerful mightiness of Abraham; the calm meditativeness of Isaac; the crystal purity of Joseph; the serene and unspotted godliness of Samuel; the burning flames of Elijah; the calm constancy of David; the stern self-sacrifice and zealous fervour of the Baptisit; the fiery ardour of holy Paul; the loveliness of St. John the Divine. The sum of what has been advanced may be stated as enforcing these two lessons.

1. That you must avoid as though it were death, the idea of spiritual finality, in the attainments of grace. Never think you have enough of God and God's Spirit. Never be satisfied with any successes you have reached in holiness. Never pause in your career, saying to the deceived and languid soul, "Rest and be thankful." But press on ever to higher, nobler, and more spiritual heights.

2. That there is a law of progress implanted in our nature, which has no limitation. No man here can tell how high he can go in excellence — how far he can reach in godly purity. In the very idea of immortality is implied somewhat that is limitless and unconfined; and so we can by God's grace stretch out further and further, until we are lost in God Himself. O grand and noble acquisition! O blessed and heavenly consummation!

(A. Crummell, D. D.)

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KJV: I am the LORD thy God, which brought thee out of the land of Egypt: open thy mouth wide, and I will fill it.

WEB: I am Yahweh, your God, who brought you up out of the land of Egypt. Open your mouth wide, and I will fill it.