A wise man is strong and a man of knowledge increases strength. While the world focuses on physical strength, the greater strength is that which is spiritual.
The right kind of sorrow is often needful and brings with it certain benefits. Yet, it is in the joy of the LORD that God's people specifically find strength.
Perceived strength can be one’s own worst enemy. After all, it leads people to think that they are more powerful and capable than they really are.
