Read Judges 8:20 Using Other Translations
And he said unto Jether his firstborn, Up, and slay them. But the youth drew not his sword: for he feared, because he was yet a youth.
So he said to Jether his firstborn, "Rise and kill them!" But the young man did not draw his sword, for he was afraid, because he was still a young man.
Turning to Jether, his oldest son, he said, “Kill them!” But Jether did not draw his sword, for he was only a boy and was afraid.