Matthew 1:20
20. But while he thought on these things—Who would not feel for him after receiving such intelligence, and before receiving any light from above? As he brooded over the matter alone, in the stillness of the night, his domestic prospects darkened and his happiness blasted for life, his mind slowly making itself up to the painful step, yet planning how to do it in the way least offensive—at the last extremity the Lord Himself interposes.
behold, the angel of the Lord appeared to him in a dream, saying, Joseph thou son of David—This style of address was doubtless advisedly chosen to remind him of what all the families of David's line so early coveted, and thus it would prepare him for the marvellous announcement which was to follow. fear not to take unto thee Mary thy wife, for that which is conceived in her is of the Holy Ghost—Though a dark cloud now overhangs this relationship, it is unsullied still.Matthew 2:13
13. And when they were departed, behold, the angel of the Lord appeareth to Joseph in a dream, saying, Arise, and take the young child and his mother—Observe this form of expression, repeated in Mt 2:14 —another indirect hint that Joseph was no more than the Child's guardian. Indeed, personally considered, Joseph has no spiritual significance, and very little place at all, in the Gospel history.
and flee into Egypt—which, being near, as ALFORD says, and a Roman province independent of Herod, and much inhabited by Jews, was an easy and convenient refuge. Ah! blessed Saviour, on what a checkered career hast Thou entered here below! At Thy birth there was no room for Thee in the inn; and now all Judea is too hot for Thee. How soon has the sword begun to pierce through the Virgin's soul (Lu 2:35)! How early does she taste the reception which this mysterious Child of hers is to meet with in the world! And whither is He sent? To "the house of bondage?" Well, it once was that. But Egypt was a house of refuge before it was a house of bondage, and now it has but returned to its first use. and be thou there until I bring thee word; for Herod will seek the young child to destroy him—Herod's murderous purpose was formed before the Magi had reached Bethlehem.