He knew her not, till after she had brought forth — It cannot be inferred from hence, that he knew her afterward: no more than it can be inferred from that expression, 2 Samuel 6:23, Michal had no child till the day of her death, that she had children afterward. Nor do the words that follow, the first — born son, alter the case. For there are abundance of places, wherein the term first born is used, though there were no subsequent children. Luke 2:7.
Related Commentaries of Matthew 1:25
Matthew 1:25
25 And knew her not till she had brought forth her firstborn son: and he called his name JESUS.