Incarnation (Christianity)

In the Christian religion, the Incarnation is the belief that God the Son, the second person of the Trinity who had no beginning and was fully divine, "made himself nothing" by becoming a human being named Jesus. Since Jesus had two natures—human and divine—he was at the same time fully human and fully God.
In the Incarnation, the divine nature of Christ was joined—but not mixed—with human nature. Two natures in one person: Jesus was both "truly God and truly man". The Incarnation is celebrated each year at the Feast of the Incarnation, also known as the Annunciation.