He gives power to the faint and increases the strength of the weak. Isaiah 40:29-31

But He said to me, “My grace is sufficient for you, for My power is perfected in weakness.” Therefore, I will boast all the more gladly in my weaknesses, so that the power of Christ may rest on me. That is why, for the sake of Christ, I delight in weaknesses, in insults, in hardships, in persecutions, in difficulties. For when I am weak, then I am strong. 2 Corinthians 12:9-10