Genesis 37:25

And they sat down to eat bread; and they lifted up their eyes and looked, and, behold, a company of Ishmaelites came from Gilead with their camels bearing spicery and balm and myrrh, going to carry it down to Egypt. In the century and a half since Midian, the son of Keturah, and Ishmael had been dismissed from the house of Abraham, their descendants must have become a tribe of some number. The Midianites and the Ishmaelites were largely engaged in trading, the present caravan being loaded with gum-tragacanth of Syria, with terebinth-balm of Gilead, and with the fragrant gum of the cistus-rose found throughout Arabia. The merchants had crossed the Jordan near what was afterwards Beth-Shean and were following the caravan road through the plain of Tell-Dothan to Ramleh and then down to Egypt, where they hoped to dispose of their merchandise.