But a second point is, that Jesus was the heir of Abram not merely because He was his descendant, a Jew with all the advantages of the Jew, but because, like Abram, He was full of faith. God was the atmosphere of His life. But He claimed God not because He was Jewish, but because He was human. Through the Jews God had made Himself known, but it was to what was human not to what was Jewish He appealed. And it was as Son of man not as son of Israel or of Adam that Jesus responded to God and lived with Him as His God. Not by specially Jewish rites did Jesus approach and rest in God, but by what is universal and human, by prayer to the Father, by loving obedience, by faith and submission. And thus we too may be joint-heirs with Christ and possess God. And if we think of ourselves as left to struggle with natural defects amidst irreversible natural laws; if we begin to pray very heartlessly, as if He who once listened were now asleep or could do nothing; if our life seems profitless, purposeless, and all unhinged; then let us look back to this sure promise of God, that He will be our God: our God, for, if Christ’s God, then ours, for if we be Christ’s then are we Abram’s seed and heirs according to the promise. How few in any given day are living on this promise: how few attach reality to God’s continuous revelation of Himself, the reality in this world’s transitory history: how few can believe in the nearness and observance and love of God, how few can strenuously seek to be holy or understand where abiding happiness is to be found; for all these things are here. Yet who knocks at this door? Who makes, as Christ made, his life a unity with God, undismayed, unmurmuring, unreluctant, neither fearful of God nor disobedient, but diligent, earnest, jubilant, because God has said, “I will be thy God.” Do you believe these things and can you forbear to use them? Do you believe that it is open to you, whosoever you are, to have the Eternal and Supreme God for your God, that He may use all His Divine nature in your behalf; have you conceived what it is that God means when He extends to you this offer, and can you decline to accept it, can you do otherwise than cherish it and seek to find more and more in it every day you live?
Two seals were at this time affixed to the covenant: the one for Abram himself, the other for every one who shared with him in his blessings of the covenant. The first consisted in the change of his own name to Abraham, “the father of a multitude,” and of his wife’s to Sarah, “princess” or “queen,” because she was now announced as the destined mother of kings. And however Abraham would be annoyed to see the hardly suppressed smile on the ironical faces of his men as he boldly commanded them to call him by a name whose verification seemed so grievously to lag; and however indignant and pained he may have been to hear the young Ishmael jeering Sarah with her new name, and lending to it every tone of mockery and using it with insolent frequency, yet Abraham knew that these names were not given to deceive; and probably as the name of Abraham has become one of the best known names on earth, so to himself did it quickly acquire a preciousness as God’s voice abiding with him, God’s promise renewed to him through every man that addressed him, until at length the child of promise lying on his knees took up its first syllable and called him “Abba.”
This seal was special to Abraham and Sarah, the other was public. All who desired to partake with Abraham in the security, hope, and happiness of having God as their God, were to submit to circumcision. This sign was to determine who were included in the covenant. By this outward mark encouragement and assurance of faith were to be quickened in the heart of all Abraham’s descendants.
The mark chosen was significant. It was indeed not distinctive in its outward form; so little so that at this day no fewer than one hundred and fifty millions of the race make use of the same rite for one purpose or other. All the descendants of Ishmael of course continue it, but also all who have their religion, that is, all Mohammedans; but besides these, some tribes in South America, some in Australia, some in the South Sea Islands, and a large number of Kaffir tribes. The ancient Egyptians certainly practised it, and it has been suggested that Abraham may have become acquainted with the practice during his sojourn in Egypt. It is however uncertain whether the practice in Egypt runs back to so early a time. If it were an established Egyptian usage, then of course Hagar would demand for her boy at the usual age the rite which she had always associated with entrance on a new stage of life. But even supposing this was the case, the rite was none the less available for the new use to which it was now put. The rainbow existed before the Flood; bread and wine existed before the night of the Lord’s Supper; baptisms of various kinds were practised before the days of the Apostles. And for this very reason, when God desired a natural emblem of the stability of the seasons He chose a striking feature of nature on which men were already accustomed to look with pleasure and hope; when He desired symbols of the body and blood of the Redeemer He took those articles which already had a meaning as the most efficacious human nutriment; when He desired to represent to the eye the renunciation of the old life and the birth to a new life which we have by union with Christ, He took that rite which was already known as the badge of discipleship; and when He desired to impress men by symbol with the impurity of nature and with our dependence on God for the production of all acceptable life, He chose that rite which, whether used before or not, did most strikingly represent this.
With the significance of circumcision to other men who practise it, we have here nothing to do. It is as the chief sacrament of the old covenant, by which God meant to aid all succeeding generations of Hebrews in believing that God was their God. And this particular mark was given, rather than any other, that they might recognise and ever remember that human nature was unable to generate its own Saviour, that in man there is a native impurity which must be laid aside when he comes into fellowship with the Holy God. And these circumcised races, although in many respects as unspiritual as others, have yet in general perceived that God is different from nature, a Holy Being to Whom we cannot attain by any mere adherence to nature, but only by the aid He Himself extends to us in ways for which nature makes no provision. The lesson of circumcision is an old one and rudely expressed, but it is vital; and no abhorrence of the circumcised for the uncircumcised too strongly, however unjustly, emphasizes the distinction that actually subsists between those who believe in nature and those who believe in God.
The lesson is old, but the circumcision of the heart to which the outward mark pointed, is ever required. That is the true seal of our fellowship with God; the earnest of the Spirit which gives promise of eternal union with the Holy One; the relentings, the shame, the softening of heart, the adoration and reverence for the holiness of God, the thirst for Him, the joy in His goodness, these are the first fruits of the Spirit, which lead on to our calling God Father, and feeling that to be alone with Him is our happiness. It is this putting aside of our natural confidence in nature and absorption in nature, and this turning to God as our confidence and our life, which constitutes the true circumcision of the heart.
Believing as Abraham was, he could not forbear smiling when God said that Sarah would be the mother of the promised seed. This incredulity of Abraham was so significant that it was commemorated in the name of Isaac, the laugher. This heir was typical of all God’s best gifts, at first reckoned impossible, at last filling the heart with gladness. The smile of incredulity became the laughter of joy when the child was born and Sarah said, “God hath made me to laugh, so that all that hear will laugh with me.” It is they who expect things so incongruous and so impossible to nature unaided that they smile even while they believe, who will one day find their hopes fulfilled and their hearts running over with joyful laughter. If your heart is fixed only on what you can accomplish for yourself, no great joy can ever be yours. But frame your actual hopes in accordance with the promise of God, expect holiness, fulness of joy, animating partnership with God in the highest matters, the resurrection of the dead, the life everlasting, and one day you will say, “God hath made me to laugh.” But Abraham prostrating himself to hide a smile is the symbol of our common attitude. We profess to believe in a God of unspeakable power and goodness, but even while we do so we find it impossible to attach a sense of reality to His promises. They are kindly, well-intentioned words, but are apparently spoken in neglect of solid, obstinate facts. How hard is it for us to learn that God is the great reality, and that the reality of all else may be measured by its relation to Him.
Sarah’s laughter had a different meaning. Indeed Sarah does not appear to have been by any means a blameless character. Her conduct towards Hagar showed us that she was a woman capable of generous impulses but not of the strain of continued magnanimous conduct. She was capable of yielding her wifely rights on the impulse of the brilliant scheme that had struck her, but like many other persons who can begin a magnanimous or generous course of conduct, she could not follow it up to the end, but failed disgracefully in her conduct towards her rival. So now again she betrays characteristic weakness. When the strangers came to Abraham’s tent, and announced that she was to become a mother, she smiled in superior, self-assured, woman’s wisdom. When the promise threatened no longer to hover over her household as a mere sublime and exalting idea which serves its purpose if it keep them in mind that God has spoken to them, but to take place now among the actualities of daily occurrence, she hails this announcement with a laugh of total incredulity. Whatever she had made of God’s word, she had not thought it was really and veritably to come to pass; she smiled at the simplicity which could speak of such an unheard-of thing.
This is true to human nature. It reminds you how you have dealt with God’s promises,—nay, with God’s commandments—when they offered to make room for themselves in the everyday life of which you are masters, every detail of which you have arranged, seeming to know absolutely the laws and principles on which your particular line of life must be carried on. Have you never smiled at the simplicity which could set about making actual, about carrying out in practical life, in society, in work, in business, those thoughts, feelings and purposes, which God’s promises beget? Sarah did not laugh outright, but smiled behind the Lord; she did not mock Him to His face, but let the compassionate expression pass over her face with which we listen to the glowing hopes of the young enthusiast who does not know the world. Have we not often put aside God’s voice precisely thus; saying within us, We know what kind of things can be done by us and others and what need not be attempted; we know what kind of frailties in social intercourse we must put up with, and not seek to amend; what kind of practices it is vain to think of abolishing; we know what use to make of God’s promise and what use not to make of it; how far to trust it, and how far to give greater weight to our knowledge of the world and our natural prudence and sense? Does not our faith, like Sarah’s, vary in proportion as the promise to be believed is unpractical? If the promise seems wholly to concern future things, we cordially and devoutly assent; but if we are asked to believe that God intends within the year to do so-and-so, if we are asked to believe that the result of God’s promise will be found taking a substantial place among the results of our own efforts—then the derisive smile of Sarah forms on our face.
To look at the crowds of persons professing religion, one would suppose nothing was commoner than faith. There is nothing rarer. Devoutness is common; righteousness of life is common; a contempt for every kind of fraud and underhand practice is common; a highminded disregard for this world’s gains and glories is common; an abhorrence of sensuality and an earnest thirst for perfection are common—but faith? Will the Son of man when He comes find it on earth? May not the messengers of God yet say, Who hath believed our report? Why, the great majority of Christian people have never been near enough to spiritual things to know whether they are or are not, they have never narrowly weighed spiritual issues and trembled as they watched the uncertain balance, they say they believe God and a future of happiness because they really do not know what they are talking about—they have not measured the magnitude of these things. Faith is not a blind and careless assent to matters of indifference, faith is not a state of mental suspense with a hope that things may turn out to be as the Bible says. Faith is the firm persuasion that these things are so. And he who at once knows the magnitude of these things and believes that they are so, must be filled with a joy that makes him independent of the world, with an enthusiasm which must seem to the world like insanity. It is quite a different world in which the man of faith lives.