'Angel of the Lord' in the Bible

But while he was thinking of these things, behold, an angel of the Lord appeared to him in a dream, saying: Joseph, son of David, fear not to take home Mary your wife; for that which is begotten in her is of the Holy Spirit.

And Joseph awoke from his sleep, and did as the angel of the Lord had commanded him; and he took home his wife,

When they had departed, behold, an angel of the Lord appeared to Joseph in a dream, saying: Arise, and take the young child and his mother, and flee into Egypt, and be there till I bring you word; for Herod is about to seek for the young child, to destroy him.

But when Herod was dead, behold, an angel of the Lord appeared in a dream to Joseph in Egypt,

And behold, there had been a great earthquake; for an angel of the Lord having descended from heaven, came and rolled away the stone from the door, and sat upon it.

And there appeared to him an angel of the Lord, standing at the right side of the altar of incense.

And, behold, an angel of the Lord stood by them, and the glory of the Lord shone round about them; and they were greatly afraid.

But an angel of the Lord opened the doors of the prison by night, and brought them out, and said:

And when forty years were completed, there appeared to him, in the wilderness of Mount Sinai, an angel of the Lord in a flame of fire in a bush.

And an angel of the Lord spoke to Philip, saying: Arise, and go toward the south, to the road that leads from Jerusalem to Gaza; this is desert.

And behold, an angel of the Lord stood by him, and a light shone in the prison. And he gently struck Peter on the side, and awoke him, saying: Arise quickly; and his chains fell from his hands.

And immediately an angel of the Lord smote him, because he did not give God the glory. And having been eaten by worms, he expired.