Judges 10:12 (KJV)

And the anger of the LORD was hot against Israel, and he sold them into the hands of the Philistines, and into the hands of the children of Ammon.

And that year they vexed and oppressed the children of Israel: eighteen years, all the children of Israel that were on the other side Jordan in the land of the Amorites, which is in Gilead.

Moreover the children of Ammon passed over Jordan to fight also against Judah, and against Benjamin, and against the house of Ephraim; so that Israel was sore distressed.

And the children of Israel cried unto the LORD, saying, We have sinned against thee, both because we have forsaken our God, and also served Baalim.

And the LORD said unto the children of Israel, Did not I deliver you from the Egyptians, and from the Amorites, from the children of Ammon, and from the Philistines?

Yet ye have forsaken me, and served other gods: wherefore I will deliver you no more.

Go and cry unto the gods which ye have chosen; let them deliver you in the time of your tribulation.

And the children of Israel said unto the LORD, We have sinned: do thou unto us whatsoever seemeth good unto thee; deliver us only, we pray thee, this day.

And they put away the strange gods from among them, and served the LORD: and his soul was grieved for the misery of Israel.

Then the children of Ammon were gathered together, and encamped in Gilead. And the children of Israel assembled themselves together, and encamped in Mizpeh.