The great barrier to worship among God's people is not that we are always seeking our own satisfaction, but that our seeking is so weak and half-hearted that we settle for little sips at broken cisterns when the fountain of life is just over the next hill.
John PiperThe most dangerous thing in the world is the sin of self-reliance and the stupor of worldliness.
John PiperThe suffering of sickness and the suffering of persecution have this in common: they are both intended by Satan for the destruction of our faith, and governed by God for the purifying of our faith... Christ sovereignly accomplishes His loving, purifying purpose, by overruling Satan's destructive attempts. Satan is always aiming to destroy our faith; but Christ magnifies His power in weakness.
John Piper