Make the hearts of this people calloused; deafen their ears and close their eyes. Otherwise they might see with their eyes, hear with their ears, understand with their hearts, and turn and be healed.”
- Isaiah 6:10
Our worldly wisdom has made us calloused and hard. Our natural wisdom, as the Scriptures teach, comes not from God, but is earthly, sensual, and devilish.
- Billy Graham
Calloused hands were the badge of the pioneer, while furrowed brows are the insignia of modern man.