Hebrews 11 has something to say about the Judges and their faith, but I think what the passage goes on to say is perhaps even more important. Yes, God can do great things through us if we have faith! But, even if he doesn’t, we still need to have faith and follow Him, regardless of the outcome.
Hebrews 11:32-38 “And what more shall I say? For time would fail me to tell of Gideon, Barak, Samson, Jephthah, of David and Samuel and the prophets— who through faith conquered kingdoms, enforced justice, obtained promises, stopped the mouths of lions, quenched the power of fire, escaped the edge of the sword, were made strong out of weakness, became mighty in war, put foreign armies to flight. Women received back their dead by resurrection. Some were tortured, refusing to accept release, so that they might rise again to a better life. Others suffered mocking and flogging, and even chains and imprisonment. They were stoned, they were sawn in two, they were killed with the sword. They went about in skins of sheep and goats, destitute, afflicted, mistreated— of whom the world was not worthy—wandering about in deserts and mountains, and in dens and caves of the earth.”