8 who that year shattered and crushed them. For eighteen years they oppressed all the Israelites on the east side of the Jordan in Gilead, the land of the Amorites.

Read Judges 10:8 Using Other Translations

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.
and they crushed and oppressed the people of Israel that year. For eighteen years they oppressed all the people of Israel who were beyond the Jordan in the land of the Amorites, which is in Gilead.
who began to oppress them that year. For eighteen years they oppressed all the Israelites east of the Jordan River in the land of the Amorites (that is, in Gilead).