Would you fight with a weapon that doesn't work?

What if God promised you that no weapon you could use against someone will be effective? What if God promised you that any act against someone will fail?

But in that coming day no weapon turned against you will succeed. You will silence every voice raised up to accuse you. These benefits are enjoyed by the servants of the Lord; their vindication will come from me. I, the Lord, have spoken! (Isaiah 54:17)

Have you ever tried to shoot a water gun while you were underwater? And no I’m not talking about an u…