For the foolishness of God is wiser than man's wisdom, and the weakness of God is stronger than man's strength. But God chose the foolish things of the world to shame the wise; God chose the weak things of the world to shame the strong. He chose the lowly things of this world and the despised things - and the things that are not - to nullify the things that are, so that no one may boast before him. Therefore, as it is written: "Let him who boasts boast in the Lord."
A subset of verses about Weakness. NIV.
I will boast about a man like that, but I will not boast about myself, except about my weaknesses. But he said to me, "My grace is sufficient for you, for my power is made perfect in weakness." Therefore I will boast all the more gladly about my weaknesses, so that Christ's power may rest on me. That is why, for Christ's sake, I delight in weaknesses, in insults, in hardships, in persecutions, in difficulties. For when I am weak, then I am strong.
In the same way, the Spirit helps us in our weakness. We do not know what we ought to pray for, but the Spirit himself intercedes for us with groans that words cannot express.
So will it be with the resurrection of the dead. The body that is sown is perishable, it is raised imperishable; it is sown in dishonor, it is raised in glory; it is sown in weakness, it is raised in power;
If I must boast, I will boast of the things that show my weakness.
For to be sure, he was crucified in weakness, yet he lives by God's power. Likewise, we are weak in him, yet by God's power we will live with him to serve you.
And what more shall I say? I do not have time to tell about Gideon, Barak, Samson, Jephthah, David, Samuel and the prophets, who through faith conquered kingdoms, administered justice, and gained what was promised; who shut the mouths of lions, quenched the fury of the flames, and escaped the edge of the sword; whose weakness was turned to strength; and who became powerful in battle and routed foreign armies.