So much, then, for the first principle: No inheritance without sonship.
II. Secondly, the text leads us to the principle that there is no sonship without a spiritual birth.
The Apostle John in that most wonderful preface to his Gospel, where all deepest truths concerning the Eternal Being in itself and in the solemn march of His progressive revelations to the world are set forth in language simple like the words of a child and inexhaustible like the voice of a god, draws a broad distinction between the relation to the manifestations of God which every human soul by virtue of his humanity sustains, and that into which some, by virtue of their faith, enter. Every man is lighted by the true light because he is a man. They who believe in His name receive from Him the prerogative to become the sons of God. Whatever else may be taught in John's words, surely they do teach us this, that the sonship of which he speaks does not belong to man as man, is not a relation into which we are born by natural birth, that we _become_ sons after we _are_ men, that those who become sons do not include all those who are lighted by the Light, but consist of so many of that greater number as receive Him, and that such become sons by a divine act, the communication of a spiritual life, whereby they are born of God.
The same Apostle, in his Epistles, where the widest love is conjoined with the most firmly drawn lines of moral demarcation between the great opposites--life, light, love--death, darkness, hate--contrasts in the most unmistakable antithesis the sons of God who are known for such because they do righteousness, and the world which knew not Christ, nor knows those who, dimly beholding, partially resemble Him. Nay, he goes further, and says in strange contradiction to the popular estimate of his character, but in true imitation of that Incarnate love which hated iniquity, 'In this the children of God are manifested and the children of the devil'--echoing thus the words of Him whose pitying tenderness had sometimes to clothe itself in sharpest words, even as His hand of powerful love had once to grasp the scourge of small cords. 'If God were your Father, ye would love Me: ye are of your father, the devil.'
These are but specimens of a whole cycle of Scripture statements which in every form of necessary implication, and of direct statement, set forth the principle that he who is born again of the Spirit, and he only, is a son of God.
Nothing in all this contradicts the belief that all men are the children of God, inasmuch as they are shaped by His divine hand and He has breathed into their nostrils the breath of life. They who hold that sonship is obtained on the condition which these passages seem to assert, do also rejoice to believe and to preach that the Father's love broods over every human heart as the dovelike Spirit over the primeval chaos. They rejoice to proclaim that Christ has come that all, that each, may receive the adoption of sons. They do not feel that their message to, nor their hope for, the world is less blessed, less wide, because while they call on all to come and take the things that are freely given to them of God, they believe that those only who do come and take possess the blessing. Every man may become a son and heir of God by faith in Jesus Christ.
But notwithstanding all the mercies that belong to us all, notwithstanding the divine beneficence, which, like the air and the light, pervades all nature, and underlies all our lives, notwithstanding the universal adaptation and intention of Christ's work, notwithstanding the wooing of His tender voice and the unceasing beckoning of His love, it still remains true that there are men in the world, created by God, loved and cared for by Him, for whom Christ died, who might be, but are not, sons of God.