Genesis 37:25-28

25And they sat down to eat bread; and they lifted up their eyes and looked, and behold, a caravan of Ishmaelites came from Gilead; and their camels bore tragacanth, and balsam, and ladanum — going to carry [it] down to Egypt.

26And Judah said to his brethren, What profit is it that we kill our brother and secrete his blood?

27Come and let us sell him to the Ishmaelites; but let not our hand be upon him; for he is our brother, our flesh. And his brethren hearkened [to him].

28And Midianitish men, merchants, passed by; and they drew and lifted up Joseph out of the pit, and sold Joseph to the Ishmaelites for twenty silver-pieces; and they brought Joseph to Egypt.