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speratus said:

Once you postulate that man is free to do evil (reject the gospel), you must accept that there is cause of salvation within man. This is completely contrary to all the solas of the Reformation. The Reformation fathers understood this but, apparently, this teaching is lost on our modern Pelagian world.

I stand corrected. Not all modern theologians have lost this teaching.

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The sinner is never forced to sin. But the sinner is not free to do either good or evil, because an evil heart within is ever inclining him toward sin. Let us illustrate what we have in mind. I hold in my hand a book. I release it; what happens! It falls. In which direction? Downwards, always downwards. Why? Because, answering the law of gravity, its own weight sinks it.

God's Sovereignty and the Human Will, A.W. Pink