Genesis 37:36

Now Joseph was brought down to Egypt; and Potiphar, an Egyptian official of Pharaoh, the captain of the bodyguard, bought him from the Ishmaelites, who had brought him down there.

“Now there was with us a Hebrew youth, a slave of the captain of the bodyguard, and we recounted them to him, and he interpreted our dreams for us. To each one he interpreted according to his own dream.

Then Eliab his oldest brother heard when he spoke to the men; and Eliab’s anger burned against David, and he said, “Why have you come down? And with whom have you left those few sheep in the wilderness? I myself know your arrogance and the wickedness of your heart, for you have come down in order to see the battle.”

He sent a man before them, Joseph, who was sold as a slave.

And as for the rest of the people who remained in the city, the defectors who had gone over to him and the rest of the people who remained, Nebuzaradan the captain of the bodyguard took them away into exile in Babylon.