According to Cornelius Van Til, it is Karl Barth's:
"Total depravity. That means the whole glass is poisoned. It's not as poisoned as it could be, but it's all poisoned. The faculties of soul are all turned against God by nature. All are poisoned by sin. Wherever there is evidence of God, which is everywhere, man will deny it. You see, God must reach down and save dead men in their trespasses and sins. You do not heal a dead man. You resurrect him. Man is not sick, not drowning, but dead. Dead is dead. You can't throw him a rope. A dead man can't grab anything. Your mother is dead without Christ. Your culture is dead without Christ. This is the problem with Karl Barth, there's no space-and-time redemption by Christ. There's no change of the unbeliever to believer. There's no challenge to the natural man. That's why Barth is poison. Water and sulfuric acid look the same, right? If you drink sulfuric acid, it will kill you. Barth has placed sulfuric acid in our water bottles and told us it is water. Barth has created the systematically most satanic philosophy ever devised by the mind of man. Salvation is like cleaning a bad tooth. It's no good if your dentist tells you your tooth is okay when it's rotten. The dentist has to go down, drill out the decay and replace it with gold. This is what salvation is." (Van Til Made Me Reformed by Eric H. Sigward, emphasis mine)
For Van Til's essay in the Westminster Theological Journal entitled, "Has Karl Barth Become Orthodox?", click here.
For a PDF copy, email me.