The words in the "hail Mary" are mostly from holy scripture. You can find them in Luke chapter one and even though some additions are present in the suppliant part of the prayer they are in keeping with scriptural themes.
Hail Mary, full of grace. (Luke 1:28)
Our Lord is with thee. (Luke 1:28)
Blessed art thou among women, (Luke 1:42)
and blessed is the fruit of thy womb, (Luke 1:42)
Jesus. (The name of God the Son while incarnate on Earth and now in the heavens)
Holy Mary, Mother of God, (Luke 3:23, 38)
pray for us sinners, (Colossiand 4:3)
now and at the hour of our death. (a good time for prayers)
Amen. (a word found in holy scripture and meaning "truly")