Final answer:
The angel Gabriel appeared to Zacharias to announce the birth of John the Baptist. This event is separate from the Annunciation to Mary, which is a well-known Christian story and commemorated in art and celebration.
Step-by-step explanation:
The angel Gabriel appeared to Zacharias (not mentioned in the provided text but known from the Gospel of Luke) and told him that his wife, Elizabeth, would have a child who would turn many of the children of Israel to the Lord.
This child would be known as John the Baptist.
The account of Gabriel's announcement to Mary about the birth of Jesus is known as the Annunciation and is a separate biblical event, which is often depicted in Christian art and is celebrated on March 25.
The story of the angel appearing to Zacharias is not vastly portrayed in art or as well-known in public consciousness as the Annunciation of Mary.
Furthermore, it's important to note that the annunciation to Mary is distinctly different from the vision Muhammad received from the angel Gabriel in Islamic tradition, and both are separate from the depictions and workings of angels in the Old Testament.