Judges 3:12
And the children of Israel did evil again in the sight of the LORD: and the LORD strengthened Eglon the king of Moab against Israel, because they had done evil in the sight of the LORD.
And the children of Israel did evil again in the sight of the Lord,.... Fell into idolatry again, which was a great evil in the sight of God, and what they were prone to fall into:
and the LORD strengthened Eglon the king of Moab against Israel; put it into his heart to invade them, and encouraged him to it, and gave him success; what kings reigned over Moab between Balak and this king we know not: it is a commonly received notion of the Jews, that Ruth was the daughter of Eglon; see Ruth 1:4; and it was about this time that Elimelech with his two sons went into Moab, and when many of those things recorded in the book of Ruth were transacted:
because they had done evil in the sight of the LORD; which had greatly provoked him to anger, and was the cause of stirring up the king of Moab against them.