Judges 4:8 - Joseph Benson’s Commentary on the Old and New Testaments

If thou wilt go with me, then I will go No doubt he thought he had great reason for making this resolution, because he might want her advice in doubtful matters, and her authority also, both to raise men and to keep them together in good order, and likewise to inspire them with courage. His offer to go with her shows the truth of his faith, for which he is praised, Hebrews 11:32; but his refusal to go without her shows the weakness of his faith, that he could not trust God's bare word, as he ought to have done, without the pledge of the presence of his prophetess.