ISB ~ Luke 1 v35

overshadow you:The conception of Jesus kilkJ within the womb of Mary will be entirely supernatural, i.e., the result of God’s creative work within her (Mt 1:1825; CCC 497, 723).

• The expression used by the angel is the same used in the Greek version of Ex 40:35 to describe how Yahweh “overshadowed” the Tabernacle, making it his dwelling place in Israel.

• Gabriel mentions the Holy Spirit, the Most High, and the Son of God, offering Mary a glimpse of the Trinity.