Judges 10:8
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.
Cross-reference
Judges 11:26 recounts Israel's 300-year possession of the land the Ammonites now claim — same territory, same dispute, narrative continuation.
Numbers 10:9 promises God will remember Israel when they cry out in oppression — here they will eventually cry to God after this long siege.
Deuteronomy 28:29 is the covenant curse of continuous oppression — Israel experiences that curse here due to their apostasy.
Jeremiah 2:27 highlights Israel's hypocrisy — worshiping idols yet crying to God in trouble, exactly the pattern seen here with Ammonite oppression.
Jeremiah 49:1 condemns Ammon for dispossessing Gad — the same enemy and transjordan region are central to the oppression here.
Psalm 129:1 voices Israel's long history of oppression — here the Ammonites are the latest oppressors in that pattern.