What do we know about the archangel Gabriel?

The word “Gabriel” means “the strength of God,” which indicates the power of God and the greatness of His great works with us. He is the angel who preaches good news. In his conversation with Zechariah the high priest, he speaks of himself, describing the honor of his mission and the glory of his role thus: “I am Gabriel, who stands in the presence of God” (Luke 1:19). This is very similar to the words of the archangel Raphael to Tobias: “I am Raphael, one of the seven holy angels who report the prayers of the saints and who enter before the glory of the Holy One” (Tob. 12:15 LXX).