Matteo 1:21

The climax of the angel's message: And she shall bring forth, a son, and thou shall call His name Jesus; for He shall save His people from their sins.

It was thus ordained in God's counsel: She will give birth to a son, she is to become a mother, not only by supernatural interposition, not merely by God's giving new life to organs that were past the age of bearing, as was true in the case of Sarah and Elizabeth, Genesis 18:10-14; Luke 1:7-18, but by a miraculous suspension of the usual process of nature, according to which men are born of the will of the flesh and of the will of man, both sexes being active.

And this son of Mary he, Joseph, was to call Jesus. This is a command in the form of a prediction. By giving to the child His name, Joseph would publicly recognize and formally adopt Him as his legal son. Jesus is to be the child's name, not indeed as a mere appellation to distinguish Him from other people, as in the case of the Hebrew synonym Joshua, Numbers 13:17; Zechariah 3:1, but as an expression of the very essence of the divine personality, through which the salvation of men would be gained.

For the angel explains the name: He shall save His people from their sins That, in a sentence, is the end and object of His coming, that alone is His errand and mission: He, and no other. He alone, and He completely, saves. He brings full pardon, free salvation, complete deliverance, not only from the pollution and power, but also from the guilt of sin. To His people He brings this priceless boon, not merely to the members of His nation according to the flesh, to the Jewish people, but to all that are in need of a Savior, Matthew 18:11. This is the Gospel-message, not that Jesus makes allowances for sin, but that He has made atonement for it; not that He tolerates sin, but that He destroys it.