And the angel answered and said unto her, The Holy Spirit shall come upon you, and the power of the Highest shall overshadow you: therefore also that holy thing which shall be born of you shall be called the Son of God.
All Commentaries on Luke 1:35 Go To Luke 1
Gregory The Dialogist
AD 604
Wherefore he says, "The Holy Spirit shall come upon thee, and the power of the highest shall overshadow thee: therefore also that holy thing which shall be born of thee shall be called the Son of the Highest."