A striking feature of the angel’s greeting is that he does not address Mary with the usual Hebrew salutation shalom – peace be with you – chaíre, which we might well translate with the word “Hail,” as in the Church’s Marian prayer, pieced together from the words of the annunciation narrative (cf. Lk 1:28, 42). Yet at this point it is only right to draw out the true meaning of the word chaíre: rejoice! This exclamation from the angel – we could say – marks the true beginning of the New Testament.
"God is the brightest of lights which can never be extinguished, and the choirs of angels radiate light from the divinity. Angels are pure praise without any trace of a bodily deed."-St. Hildegard of Bingen