Was there really an angel Gabriel?

The angels are an important part of modern Jewish tradition, as well as those of Christianity and Islam, with Gabriel having the special role of being the messenger of God.

However, angels only entered Jewish belief in books of the Bible written after the Babylonian Exile, possibly as a result of Zoroastrian influence. If the Israelites had not previously known of angels, it is reasonable to say that angels do not really exist, and therefore the angel Gabriel does not exist.

ANSWER

The first book of the Bible talks about Angels. Or perhaps more appropriatly, "Fallen Angels." Nephilim. This was before the Babylonian Exile. It is not accurate to say that angels are the result of an incorporation of different traditions and beliefs into the Torah.