The Covenant of Works is a theological phrase which speaks of the pre-Fall agreement between God and Adam in which Adam was promised blessing and life upon obedience to the terms of the covenant and cursing and death should he disobey the terms of the covenant.
reference of Gill's thoughts on it:
A Body of Doctrinal Divinity by John Gill.
Part III: Of the Eternal Works of God.
Section 7. Of the Law Given to Adam,
and the Covenant made with Him in the State of Innocence...
Part 4. Fourthly,
The law given to Adam, as it had the nature of a covenant, it contained a promise in it and had a sanction annexed to it.
4a.
It contained a promise; which was a promise of life, of natural life to Adam, and of a continuation of it so long as he should observe the condition of it;
"just as
life was promised to the Israelites, and a continuance in it, in the land of Canaan, so long as they should observe the law of God;
"for neither the law of Moses, nor the law of nature,
made promise of any other than of natural life.
"Some divines, and these of great name and figure in the churches of Christ, think, and indeed it is most generally received, that Adam continuing in his obedience, had a promise of eternal life.
"I cannot be of that mind.
"There is, indeed, an ambiguity in the phrase "eternal life";
if no more is meant by it than living forever in his present life, it will not be denied;
but if by it is designed such a state of glory and happiness, which saints shall enjoy in Heaven to all eternity;
that must be denied for the following reasons:
4a1.
Adam's covenant was but a natural covenant; and which was made with a natural man, as Adam is called by the apostle (1 Corinthians 15:46,47), and which covenant promised no supernatural blessing, neither grace nor glory;
for as for spiritual blessings, these the elect are blessed with only in heavenly places in Christ (Ephesians 1:3).
4a2.
It was in another covenant more early than that of Adam's, in which eternal life was promised and secured;
God, that cannot lie, promised it before the world began;
and this promise was put into Christ's hands, even from all eternity;
and the blessing itself was secured in him for all for whom it was designed (Titus 1:2; 2 Timothy 1:1; 1 John 5:10).
4a3.
Eternal life is only through Christ as the Mediator of the covenant of grace;
it comes by no other hands but his;
it is
"through Christ Jesus our Lord";
he came to open the way of it, that
"we might have life, and that more abundantly";
a more abundant, durable, and excellent life, than Adam had in innocence: Christ, as Mediator, had a
"power to give eternal life" to as many as the Father has given him;
and he does give it to all his sheep, that know his voice, hearken to him, and follow him (Romans 6:23; John 10:10; 17:3; 10:28).
4a4.
If eternal life could have been by Adam's covenant, it would have been by works; for that covenant was a covenant of works; and if by works, then not of grace; it would not have been the gift of God, as it is said to be;
"The gift of God is eternal life", ÷áñéóµá ÷÷ááññééóóµµáá ÷áñéóµá, a free grace gift.
Eternal life is no other than consummate salvation in the future state; and that is said to be of grace, and denied to be of works; (see Romans 6:23; Ephesians 2:8,9).
Should the question of the young man in the gospel, and Christ's answer to it, be objected (Matthew 19:16-22).
"Good Master, what good thing shall I do that I may inherit eternal life you will enter into life, keep the commandments";
it may be observed, Christ answers him, and deals with him on his own principles;
the man was upon the bottom of his own good works, and seeking for eternal life by them; and since he sought for life that way, Christ directs him to keep the commands, there being no good thing better than keeping them;
the young man asked him what they were; he tells him;
upon which he was very alert, and thought himself in a very good way for Heaven: but Christ, further to try him, and to convince him that eternal life was not to be enjoyed by any good thing done by him, bids him, if he would be perfect, sell all that he had, and give to the poor;
on which he went away sorrowful, unwilling to part with his possessions; and so found that eternal life was not to be had by doing.
4a5.
Life and immortality, or an immortal, eternal life, and the way to it, are only brought to light by the Gospel (2 Timothy 1:10), not by the light of nature, nor by the law of Moses; only by the Gospel of Christ.
4a6.
There is no proportion between the best works of man, even sinless obedience and eternal life; wherefore, though the threatening of death to Adam contains in it eternal death, it does not follow that the promise of life includes eternal life; since, though eternal death is the just wages and demerit of sin; yet eternal life is not the wages and merit of the works of men; it is the free gift of God (Romans 6:23).
4b.
The sanction of the law and covenant made with Adam, was death; "In the day you eat thereof you shall surely die" (Genesis 2:17), which includes death corporal, spiritual, or moral, and eternal.
4b1.
A corporal death; which lies in a separation of soul and body; as this was threatened, so the sentence of it was pronounced on the day man eat of the tree; "Dust you are, and to dust you shall return" (Genesis 3:19).
Adam was at once stripped of the immortality of his body, that gift was at once withdrawn from him, and he became a mortal man;
the seeds of death took place in him;
and he was immediately subject to diseases, disorders, and miseries, which issue in death.
4b2.
A spiritual, or rather moral death seized upon him; which lies in a separation of the soul from God, and communion with him; in an alienation from the life of God; in a deformation of the image of God; in a corruption and defilement of the several powers and faculties of the soul; in impotency and disinclination to that which is good; he became dead in trespasses and sins, as all his posterity are.
4b3.
An eternal death, which lies in a separation of soul and body from God; in a loss of the divine presence, and in a sense of divine wrath; both which are contained in these words, "Depart from me, you cursed, into everlasting fire";
a symbol of which was the ejection of Adam out of paradise;
as eternal life is the gift of God, so eternal death is the wages of sin (Matthew 25:41; Romans 6:23).