Midrash Song of Songs Rabba 6:12

“Before I was aware, she sat me in the most lavish of chariots” (Songs 6:12) Rabbi Hiyya taught: This may be compared to a king’s daughter who was gathering stray sheaves. The king passed by and recognized that she was his daughter, so he sent his friend to take her and to seat her with him in his carriage. Her friends looked at her in astonishment, saying, Yesterday you were gathering sheaves and today you sit in a charriage with the king!” She said to them: “Just as you are astonished at me, so I am astonished at myself”; and she applied to herself the verse, “Before I was a aware, she sat me in the most lavish of chariots.” Similarly, when the Israelites were in Egypt, they had to work with bricks and mortar and they were repulsive and contemptible in the eyes of the Egyptians. When they became fee and were delivered and placed in authority over the whole world, the nations were astonished and said: “Yesterday you were working with bricks and mortar, and today you have become free and rule over the whole world.” And Israel said to them: “Just as you are astonished at us, so we are astonished at ourselves”; and they applied to themselves the verse, “Before I was aware, she sat me in the most lavish of chariots.”