18. Now the birth of Jesus Christ was in this manner. For when his mother Mary was betrothed to Joseph, before they came together, she was found to be with child by the Holy Spirit. 19. And Joseph her husband, as he was a just man, and was unwilling to injure her reputation, intended to send her away secretly. 20. And while he was considering these things, lo, the angel of the Lord appeared to him in a dream, saying, Joseph, son of David, fear not to take unto thee Mary thy wife: for that which is conceived in her is by the Holy Spirit. 21. And she shall bear a son, and thou shalt call his name JESUS. For he shall save his people from their sins. 22. Now all this was done that it might be fulfilled which was spoken by the Lord through the prophet, saying, 23. Behold, a virgin shall be with child, and shall bear a son, and they shall call his name Immanuel: which, if one interprets it, means, God is with us. 24. Then Joseph, being raised from sleep, did as the angel of the Lord had commanded him, and took unto him his wife: 25. And knew her not, till she brought forth her first-born son: and called his name JESUS.
18. Now the birth of Jesus Christ Matthew does not as yet relate the place or manner of Christ’s birth, but the way in which his heavenly generation was made known to Joseph. First, he says that Mary was found to be with child by the Holy Spirit Not that this secret work of God was generally known: but the historian mixes up, with the knowledge of men,1 the power of the Spirit, which was still unknown. He points out the time: When she was espoused to Joseph, and before they came together So far as respects conjugal fidelity, from the time that a young woman was betrothed to a man, she was regarded by the Jews as his lawful wife. When a “damsel betrothed to an husband” was convicted of being unchaste, the law condemned both of the guilty parties as adulterers:
“the damsel, because she cried not, being in the city;
and the man, because he hath humbled his neighbor’s wife,”
(Deuteronomy 22:23, 24.)
The phrase employed by the Evangelist, before they came together, is either a modest appellation for conjugal intercourse, or simply means, “before they came to dwell together as husband and wife, and to make one home and family.” The meaning will thus be, that the virgin had not yet been delivered by her parents into the hands of her husband, but still remained under their roof.
19. As he was a just man Some commentators explain this to mean, that Joseph, because he was a just man, determined to spare his wife:2 taking justice to be only another name for humanity, or, a gentle and merciful disposition. But others more correctly read the two clauses as contrasted with each other: that Joseph was a just man, but yet that he was anxious about the reputation of his wife. That justice, on which a commendation is here bestowed, consisted in hatred and abhorrence of crime. Suspecting his wife of adultery, and even convinced that she was an adulterer, he was unwilling to hold out the encouragement of lenity to such a crime.3 And certainly he is but a pander4 to his wife, who connives at her unchastity. Not only is such wickedness regarded with abhorrence by good and honorable minds, but that winking at crime which I have mentioned is marked by the laws with infamy.
Joseph, therefore, moved by an ardent love of justice, condemned the crime of which he supposed his wife to have been guilty; while the gentleness of his disposition prevented him from going to the utmost rigor of law. It was a moderate and calmer method to depart privately, and remove to a distant place.5 Hence we infer, that he was not of so soft and effeminate a disposition, as to screen and promote uncleanness under the pretense of merciful dealing: he only made some abatement from stern justice, so as not to expose his wife to evil report. Nor ought we to have any hesitation in believing, that his mind was restrained by a secret inspiration of the Spirit. We know how weak jealousy is, and to what violence it hurries its possessor. Though Joseph did not proceed to rash and headlong conduct, yet he was wonderfully preserved from many imminent dangers, which would have sprung out of his resolution to depart.