Here's a quote from Gerstners Rational Biblical Theology of Jonathan Edwards, where Edwards lists 10 things that the sinner can and should do in his natural condition:
1. “A man can abstain from the outward gratifications of his lusts.”
2. “A man can in many respects keep out of the way of temptation.”
3. “Persons can perform outward duties of morality towards their neighbours.”
4. “Persons can search the Scripture.”
5. “Persons can attend all ordinances.”
6. “Persons can use their tongues to the purpose of religion.”
7. “Persons have in a great measure the command of their thoughts.”
8. “Persons can set apart a suitable proportion of their time for these things.”
9. “Persons can improve divine assistance that is given.”
10.“They can lay out their strength in these things as well as other things.”
It is perfectly clear that this answers the criticism that Edwards capitulates to Arminianism in his preparation doctrine. As much as he gives the sinner to do, all of it could be done by natural ability. There was not an iota of virtue in any or all of it.
Sin, Edwards explained, did not destroy the power of the hand but the willingness of the heart. “Outward” acts remained permanently in the power of the depraved. As Puritans were wont to observe, the sinners’ legs could take them to the meeting house as easily as to the tavern. For them, therefore, to excuse themselves for not doing what they could, because of what they could not do, was inexcusable.