But those who wait on the Lord shall renew their strength;. . .
Some of us get weary of God’s work, and others of us get weary in His work. The prophet Isaiah says that those who wait on the Lord can exchange their weakness for God’s strength. The Hebrew word actually refers to returning damaged merchandise for a new product. In the same way, you can bring your faintness back to God, and He will supply you with His strength. If you wait on the Lord, He will give you His strength for weakness, His wholeness for your emptiness, and His new beginning for your burn-out.