- God the Son took on a human nature like our own in the Incarnation. The Annunciation was when Gabriel told Mary she would conceive and bear a son named Jesus through the Holy Spirit. Jesus was then born in Bethlehem.
- The main titles of Jesus are "Jesus," meaning "God saves," "Christ," meaning "anointed one," "Lord," "Son of God," and "Son of Man," indicating his divinity and humanity.
- The "Word became flesh" in the Incarnation, as stated in the Nicene Creed. It affirms Jesus is both true God and true man, rejecting heresies like Docetism that denied his humanity.