Westminster Confession of Faith Shorter Catechism
Q. 12 What special act of providence did God exercise towards man, in the estate wherein he was created?
A. When God had created man, he entered into a covenant of life with him, upon condition of perfect obedience; forbidding him to eat of the tree of knowledge of good and evil, upon the pain of death.
The following notes to the Westminster Confession of Faith Shorter Catechism in the form of Q & A were written by Puritans Ebenezer and Ralph Erskine in 1765 in part 1 of the Fishers Catechism on the Shorter Catechism (I guess 107 questions were not enough for Puritan children). It is clear that they rejected the alleged meritorious nature of the pre-fall covenant. All emphases are mine.
Q. 30. Was there any proportion between Adam’s obedience, though sinless, and the life that was promised?
A. There can be no proportion between the obedience of a finite creature, however perfect, and the enjoyment of the infinite God, Job 22:2, 3 — “Can a man be profitable to God? Is it any pleasure to the Almighty, that thou art righteous? or, is it gain to him, that thou makest thy way perfect?”Q. 31. Why could not Adam’s perfect obedience be meritorious of eternal life?
A. Because perfect obedience was no more than what he was bound to, by virtue of his natural dependence on God, as a reasonable creature made after his image.Q. 32. Could he have claimed the reward as a debt, in case he had continued in his obedience?
A.He could have claimed it only as a pactional debt, in virtue of the covenant promise, by which God became debtor to his own faithfulness, but not in virtue of any intrinsic merit of his obedience, Luke 17:10.Q. 33. What then was the grace and condescension of God that shined in the covenant of works?
A. In that he entered into a covenant, at all, with his own creature; and promised eternal life as a reward of his work, though he had nothing to work with, but what he received from God, 1 Cor. 4:7.Q. 34. Did the covenant of works oblige man to seek life upon the account of his obedience?
A. It left man to expect it upon his obedience, but did not oblige him to seek it on that score; but only on account of the faithfulness of God in his promise, graciously annexing life to man’s sinless obedience, Matt. 19:16.

