First comes the great truth that the foundation, so far as concerns the history of a soul or of a community, of all other good is divine forgiveness (v. 25). Ezekiel, the priest, casts the promise into ceremonial form, and points to the sprinklings of the polluted under the law, or to the ritual of consecration to the priesthood. That cleansing is the removal of already contracted defilement, especially of the guilt of idolatry. It is clearly distinguished from the operation on the inward nature which follows; that is to say, it is the promise of forgiveness, or of justification, not of sanctification.
From what deep fountains in the divine nature that 'clean water' was to flow, Ezekiel does not know; but we have learned that a more precious fluid than water is needed, and have to think of Him 'who came not by water only, but by water and blood,' in whom we have redemption through His blood, even the forgiveness of our sins. But the central idea of this first promise is that it must be God's hand which sprinkles from an evil conscience. Forgiveness is a divine prerogative. He only can, and He will, cleanse from all filthiness. His pardon is universal. The most ingrained sins cannot be too black to melt away from the soul. The dye-stuffs of sin are very strong, but there is one solvent which they cannot resist. There are no 'fast colours' which God's 'clean water' cannot move. This cleansing of pardon underlies all the rest of the blessings. It is ever the first thing needful when a soul returns to God.
Then follows an equally exclusively divine act, the impartation of a new nature, which shall secure future obedience (vs. 26, 27). Who can thrust his hand into the depths of man's being, and withdraw one life-principle and enshrine another, while yet the individuality of the man remains untouched? God only. How profound the consciousness of universal obstinacy and insensibility which regards human nature, apart from such renewal, as possessing but a 'heart of stone'! There are no sentimental illusions about the grim facts of humanity here. Superficial views of sin and rose-tinted fancies about human nature will not admit the truth of the Scripture doctrine of sinfulness, alienation from God. They diagnose the disease superficially, and therefore do not know how to cure it. The Bible can venture to give full weight to the gravity of the sickness, because it knows the remedy. No surgery but God's can perform that operation of extracting the stony heart and inserting a heart of flesh. No system which cannot do that can do what men want. The gospel alone deals thoroughly with man's ills.
And how does it effect that great miracle? 'I will put My Spirit within you.' The new life-principle is the effluence of the Spirit of God. The promise does not merely offer the influence of a divine spirit, working on men as from without, or coming down upon them as an afflatus, but the actual planting of God's Spirit in the deep places of theirs. We fail to apprehend the most characteristic blessing of the gospel if we do not give full prominence to that great gift of an indwelling Spirit, the life of our lives. Cleansing is much, but is incomplete without a new life-principle which shall keep us clean; and that can only be God's Spirit, enshrined and operative within us; for only thus shall we 'walk in His statutes, and keep His judgments.' When the Lawgiver dwells in our hearts, the law will be our delight; and keeping it will be the natural outcome and expression of our life, which is His life.
Then follows the picture of the blessed effects of obedience (vs. 28-30). These are cast into the form appropriate to the immediate purpose of the prophecy, and received fulfilment in the actual restoration to the land, which fulfilment, however, was imperfect, inasmuch as the obedience and renewal of the people's hearts were incomplete. These can only be complete under the gospel, and, in the fullest sense, only in another order than the present. When men fully keep God's judgments, they shall dwell permanently in a good land. Israel's hold on its country was its obedience, not its prowess. Our real hold on even earthly good is the choosing of God for our supreme good. In the measure in which we can say 'Thy law is within my heart,' all things are ours; and we may possess all things while having nothing in the vulgar world's sense of having. Similarly that obedience, which is the fruit of the new life of God's Spirit in our spirits, is the condition of close mutual possession in the blessed reciprocity of trust and faithfulness, love bestowing and love receiving, by which the quiet heart knows that God is its, and it is God's. If stains and interruptions still sometimes break the perfectness of obedience and continuity of reciprocal ownership, there will be a further cleansing for such sins. 'If we walk in the light, the blood of Jesus Christ His Son cleanseth us from all sin' (v. 29).