“And so it was when Israel had sowen, that the Midianites came vp, & the Amalekites, & the children of the East, euen they came vp against them,”
1611 King James Version (KJV)
6:3 Children of the east - That is, the Arabians, who are commonly called the children of the east. Not all the Arabians; but the eastern part of them.