Even the youths shall faint and be weary, and the young men shall utterly fall:
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;
This is my Mom's favorite verse; I remember hearing it when I was younger. When the Lord led me to read it the other day, I realized the full impact of these precious promises. The Lord gives power and more strength to those that don't have any to begin with. The youths, those who we look at in the world that seem to have everything we could wish for, will one day faint and be weary. True strength lies in whom we put our trust in- the Lord. When we "wait upon the Lord" we are relying upon Him and He gives us renewable strength; strength that keeps getting stronger and stronger.
I don't know what you may be going through today- maybe it's physical strength that you feel you are lacking, maybe you feel like you lack the strength to finish a tough project, or maybe you lack the Spiritual strength you need to face a hardship in your life. If you rely on yourself you will lack ability just as the select youths (the best athletes of the day). Rely on the Lord-Wait on Him and He will renew your strength and give you everything you need!
(Picture from Allposters.com)