And when the inhabitants of the land, the Canaanites, saw the mourning in the threshing floor of Atad, they said, This is a mourning to the Egyptians: therefore the name of it was called Abelmizraim, which is beyond Jordan.
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George Leo Haydock
Mourning: Hebrew, "Ebel Mitsraim beyond the Jordan. "On this occasion they fasted till the evening: perhaps they also cut their flesh and plucked their hair, according to the manners of the Egyptians, which customs (Leviticus xix. 28; Deuteronomy xiv. 1.) were prohibited to the Jews. (Tirinus)