God's strength is made perfect where ours runs out. Exhaustion is not an obstacle to His work — it is where it starts.
8 verses · KJV
But they that wait upon the LORD shall renew their strength; they shall mount up with wings as eagles; they shall run, and not be weary; and they shall walk, and not faint.
I can do all things through Christ which strengtheneth me.
He giveth power to the faint; and to them that have no might he increaseth strength.
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.
The LORD is my strength and my shield; my heart trusted in him, and I am helped: therefore my heart greatly rejoiceth; and with my song will I praise him.
Finally, my brethren, be strong in the Lord, and in the power of his might.
My flesh and my heart faileth: but God is the strength of my heart, and my portion for ever.
It is God that girdeth me with strength, and maketh my way perfect.