How far Paul was acquainted with the facts of Christ’s earthly origin it is not easy to say. To a certain extent these facts would always be regarded as among the privacies of the innermost Christian circles — so long at least as Mary lived — and the details may not have been fully known till the Gospels were published. Paul admittedly did not base his preaching of his Gospel on these private, interior matters, but on the broad, public facts of Christ’s ministry, death, and resurrection. It would be going too far, however, to infer from this that Paul had no knowledge of the miracle of Christ’s birth. Luke was Paul’s companion, and doubtless shared with Paul all the knowledge which he himself had gathered on this and other subjects. One thing certain is, that Paul could not have believed in the divine dignity, the pre-existence, the sinless perfection, and redeeming headship, of Jesus as he did, and not have been convinced that His entrance into humanity was no ordinary event of nature, but implied an unparalleled miracle of some kind. This Son of God, who “emptied” Himself, who was “born of a woman, born under the law,” who “knew no sin” (Phil. 2:7, 8; Gal. 4:4; 2 Cor. 5:21), was not, and could not be, a simple product of nature. God must have wrought creatively in His human origin. The Virgin birth would be to Paul the most reasonable and credible of events. So also to John, who held the same high view of Christ’s dignity and holiness.
Doctrinally, it must be repeated that the belief in the Virgin birth of Christ is of the highest value for the right apprehension of Christ’s unique and sinless personality. Here is One, as Paul brings out in Romans 5:12 ff., who, free from sin Himself, and not involved in the Adamic liabilities of the race, reverses the curse of sin and death brought in by the first Adam, and establishes the reign of righteousness and life. Had Christ been naturally born, not one of these things could be affirmed of Him. As one of Adam’s race, not an entrant from a higher sphere, He would have shared in Adam’s corruption and doom — would Himself have required to be redeemed. Through God’s infinite mercy, He came from above, inherited no guilt, needed no regeneration or sanctification, but became Himself the Redeemer, Regenerator, Sanctifier, for all who receive Him. “Thanks be unto God for His unspeakable gift” (2 Cor. 9:15).