'Sent from God' in the Bible

The woman went and said to her husband, "A man sent from God came to me! He looked like God's angelic messenger -- he was very awesome. I did not ask him where he came from, and he did not tell me his name.

Manoah prayed to the Lord, "Please, Lord, allow the man sent from God to visit us again, so he can teach us how we should raise the child who will be born."