2 Corinthians 12:9
9 And he said unto me, My grace is sufficient for thee: for my strength is made perfect in weakness. Most gladly therefore will I rather glory in my infirmities, that the power of Christ may rest upon me.
It is those who, most conscious of their own weakness, exercise the greatest faith in the Lord as their strength, who open a way for the Lord to make the greatest measure of that strength manifest in them. The hindrance to the Lord’s strength in us is our own strength, so often. The way for His strength is our weakness.