But Jerusalem which is above is free, which is the mother of us all.For it is written, Rejoice, thou barren that bearest not; break forth and cry, thou that travailest not for the desolate hath many more children than she which hath an husband.Now we, brethren, as Isaac was, are the children of promise.But as then he that was born after the flesh persecuted him that was born after the Spirit, even so it is now.Nevertheless, what saith the Scripture? Cast out the bond woman and her son: for the son of the bond woman shall not be heir with the son of the free woman.And we, brethren, are not children of the bond woman, but of the free, in the liberty wherewith Christ hath made us free."(4) This interpretation of the passage, handed down to us with apostolic authority, shows how we ought to understand the Scriptures of the two covenants--the old and the new.One portion of the earthly city became an image of the heavenly city, not having a significance of its own, but signifying another city, and therefore serving, or" being in bondage." For it was founded not for its own sake, but to prefigure another city; and this shadow of a city was also itself foreshadowed by another preceding figure.For Sarah's handmaid Agar, and her son, were an image of this image.And as the shadows were to pass away when the full light came, Sarah, the free woman, who prefigured the free city (which again was also prefigured in another way by that shadow of a city Jerusalem), therefore said, "Cast out the bond woman and her son; for the son of the bond woman shall not be heir with my son Isaac," or, as the apostle says, "with the son of the free woman." In the earthly city, then, we find two things--its own obvious presence, and its symbolic presentation of the heavenly city.Now citizens are begotten to the earthly city by nature vitiated by sin, but to the heavenly city by grace freeing nature from sin; whence the former are called "vessels of wrath," the latter "vessels of mercy."(5) And this was typified in the two sons of Abraham,--Ishmael, the son of Agar the handmaid, being born according to the flesh, while Isaac was born of the free woman Sarah, according to the promise.Both, indeed, were of Abraham's seed; but the one was begotten by natural law, the other was given by gracious promise.In the one birth, human action is revealed; in the other, a divine kindness comes to light.
CHAP.3.--THAT SARAH'S BARRENNESS WAS
MADE PRODUCTIVE BY GOD'S GRACE.
Sarah, in fact, was barren; and, despairing of offspring, and being resolved that she would have at least through her handmaid that blessing she saw she could not in her own person procure, she gave her handmaid to her husband, to whom she herself had been unable to bear children.From him she required this conjugal duty, exercising her own right in another's womb.And thus Ishmael was born according to the common law of human generation, by sexual intercourse.Therefore it is said that he was born "according to the flesh,"--not because such births are not the gifts of God, nor His handiwork, whose creative wisdom" reaches," as it is written, "from one end to another mightily, and sweetly cloth she order all things,"(1) but because, in a case in which the gift of God, which was not due to men and was the gratuitous largess of grace, was to be conspicuous, it was requisite that a son be given in a way which no effort of nature could compass.Nature denies children to persons of the age which Abraham and Sarah had now reached;besides that, in Sarah's case, she was barren even in her prime.This nature, so constituted that offspring could not be looked for, symbolized the nature of the human race vitiated by sin and by just consequence condemned.which deserves no future felicity.Fitly, therefore, does Isaac, the child of promise, typify the children of grace, the citizens of the free city, who dwell together in everlasting peace, in which self-love and self-will have no place, but a ministering love that rejoices in the common joy all, of many hearts makes one, that is to say, secures a perfect concord.
CHAP.4.--OF THE CONFLICT AND PEACE OF THEEARTHLY CITY.
But the earthly city, which shall not be everlasting (for it will no longer be a city when it has been committed to the extreme penalty), has its good in this world, and rejoices in it with such joy as such things can afford.But as this is not a good which can discharge its devotees of all distresses, this city is often divided against itself by litigations, wars, quarrels, and such victories as are either life-destroying or short-lived.
For each part of it that arms against another part of it seeks to triumph over the nations through itself in bondage to vice.If, when it has conquered, it is inflated with pride, its victory is life-destroying; but if it turns its thoughts upon the common casualties of our mortal condition, and is rather anxious concerning the disasters that may befall it than elated with the successes already achieved, this victory, though of a higher kind, is still only shot-lived; for it cannot abidingly rule over those whom it has victoriously subjugated.But the things which this city desires cannot justly be said to be evil, for it is itself, in its own kind, better than all other human good.For it desires earthly peace for the sake of enjoying earthly goods, and it makes war in order to attain to this peace;since, if it has conquered, and there remains no one to resist it, it enjoys a peace which it had not while there were opposing parties who contested for the enjoyment of those things which were too small to satisfy both.
