KJV:
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 Abelmizraim, which is beyond Jordan.
NASB:
Now when the inhabitants of the land, the Canaanites, saw the mourning at the threshing floor of Atad, they said, "This is a grievous mourning for the Egyptians." Therefore it was named Abel-mizraim, which is beyond the Jordan.