And when the inhabitants of the land, the Canaanites, saw the mourning in the floor of Atad, they said, This [is] a grievous mourning to the Egyptians: wherefore the name of it was called Abel-mizraim, which [is] beyond Jordan.
Berean Study Bible (BSB) - Genesis 50:11 >When the Canaanites of the land saw the mourning at the threshing floor of Atad, they said, “This is a solemn ceremony of mourning by the Egyptians.” Thus the place across the Jordan is called Abel-mizraim.