TSK · Daniel 1:19

Joseph was thirty years old when he stood before Pharaoh king of Egypt. Joseph went out from the presence of Pharaoh, and went throughout all the land of Egypt.

Do you see a man skilled in his work? He will serve kings. He won't serve obscure men.

youths in whom was no blemish, but well-favored, and skillful in all wisdom, and endowed with knowledge, and understanding science, and such as had ability to stand in the king's palace; and that he should teach them the learning and the language of the Chaldeans.