'Unable' in the Bible

Why are You like a helpless man,like a warrior unable to save?Yet You are among us, Yahweh,and we are called by Your name.Don’t leave us!

But I will strip Esau bare;I will uncover his secret places.He will try to hide himself, but he will be unable.His descendants will be destroyedalong with his relatives and neighbors.He will exist no longer.