# what was evil in the sight of Yahweh

"what was evil in Yahweh's judgment" or "what Yahweh considered to be evil".  See Judges 2:11.  

# Yahweh gave strength to Eglon king of Moab

"Yahweh made Eglon king of Moab strong"

# to Eglon king of Moab to overpower Israel

"to Eglon king of Moab and his soldiers as they defeated the army of Israel"