“Oreb.” Hebrew means “Raven.”

“Zeeb.” Hebrew means “Wolf.”

“beyond the Jordan.” This refers to the west side of the Jordan River. Judges 8:4 shows that Gideon was west of the Jordan.

“And they pursued Midian, and they brought the heads.” The Hebrew text is difficult to exactly translate, which explains the numerous English translations. It seems that Ephraim joined the battle with new energy and defeated Oreb and Zeeb and continued the chase of Midian while sending the heads of the commanders to Gideon as evidence of what they had accomplished.