Angels often appear in human form before Mankind, wingless and in contemporary clothing.
And she said, I flee from the face of my mistress Sarai. In Genesis 22, we read of the encounter of Abraham with an Angel during the intended sacrifice of his only son, Isaac. In Genesis 28, we read of Jacob's dream and Jacob's ladder of Angels. And Moses said, I will now turn aside, and see this great sight, why the bush is not burnt. And when the LORD saw that he turned aside to see, God called unto him out of the midst of the bush, and said, Moses, Moses.