He called him, i.e. Joash called Gideon so, Judges 7:1, in remembrance of this noble exploit, and to put a brand upon Baal.
Related Commentaries of Judges 6:32
Judges 6:32
32 Therefore on that day he called him Jerubbaal,i saying, Let Baal plead against him, because he hath thrown down his altar.