We’ve heard the well-loved Christmas story so many times that we may risk losing the wonder of it all. Carefully read Gabriel’s announcement to Mary:
Greetings, O favored one, the Lord is with you! . . . Do not be afraid, Mary, for you have found favor with God. And behold, you will conceive in your womb and bear a son, and you shall call his name Jesus. He will be great and will be called the Son of the Most High. And the Lord God will give to him the throne of his father David, and he will reign over the house of Jacob forever, and of his kingdom there will be no end. (Luke 1:28–33)
Mary, understandably perplexed asked, “How will this be, since I am a virgin?’ And the angel answered her, ‘The Holy Spirit will come upon you, and the power of the Most High will overshadow you; therefore the child to be born will be called holy—the Son of God” (Luke 1:34–35).
In Gabriel’s announcement, we see the Trinity fully represented. Gabriel’s words come from God the Father, telling her that the Holy Spirit will come upon her, conceiving in her the Son of God. Each person of the Trinity participated in God the Son becoming man.