Bear with me. Long quotation coming:

The word of the LORD came to me: “What do you mean by repeating this proverb concerning the land of Israel, ‘The fathers have eaten sour grapes, and the children’s teeth are set on edge’? As I live, declares the Lord GOD, this proverb shall no more be used by you in Israel. Behold, all souls are mine; the soul of the father as well as the soul of the son is mine: the soul who sins shall die.

“If a man is righteous and does what is just and right— if he does not eat upon the mountains or lift up his eyes to the idols of the house of Israel, does not defile his neighbor’s wife or approach a woman in her time of menstrual impurity, does not oppress anyone, but restores to the debtor his pledge, commits no robbery, gives his bread to the hungry and covers the naked with a garment, does not lend at interest or take any profit, withholds his hand from injustice, executes true justice between man and man, walks in my statutes, and keeps my rules by acting faithfully—he is righteous; he shall surely live, declares the Lord GOD.

“If he fathers a son who is violent, a shedder of blood, who does any of these things (though he himself did none of these things), who even eats upon the mountains, defiles his neighbor’s wife, oppresses the poor and needy, commits robbery, does not restore the pledge, lifts up his eyes to the idols, commits abomination, lends at interest, and takes profit; shall he then live? He shall not live. He has done all these abominations; he shall surely die; his blood shall be upon himself.

“Now suppose this man fathers a son who sees all the sins that his father has done; he sees, and does not do likewise: he does not eat upon the mountains or lift up his eyes to the idols of the house of Israel, does not defile his neighbor’s wife, does not oppress anyone, exacts no pledge, commits no robbery, but gives his bread to the hungry and covers the naked with a garment, withholds his hand from iniquity, takes no interest or profit, obeys my rules, and walks in my statutes; he shall not die for his father’s iniquity; he shall surely live. As for his father, because he practiced extortion, robbed his brother, and did what is not good among his people, behold, he shall die for his iniquity.

“Yet you say, ‘Why should not the son suffer for the iniquity of the father?’ When the son has done what is just and right, and has been careful to observe all my statutes, he shall surely live. The soul who sins shall die. The son shall not suffer for the iniquity of the father, nor the father suffer for the iniquity of the son. The righteousness of the righteous shall be upon himself, and the wickedness of the wicked shall be upon himself.

“But if a wicked person turns away from all his sins that he has committed and keeps all my statutes and does what is just and right, he shall surely live; he shall not die. None of the transgressions that he has committed shall be remembered against him; for the righteousness that he has done he shall live. Have I any pleasure in the death of the wicked, declares the Lord GOD, and not rather that he should turn from his way and live? But when a righteous person turns away from his righteousness and does injustice and does the same abominations that the wicked person does, shall he live? None of the righteous deeds that he has done shall be remembered; for the treachery of which he is guilty and the sin he has committed, for them he shall die.

“Yet you say, ‘The way of the Lord is not just.’ Hear now, O house of Israel: Is my way not just? Is it not your ways that are not just? When a righteous person turns away from his righteousness and does injustice, he shall die for it; for the injustice that he has done he shall die. Again, when a wicked person turns away from the wickedness he has committed and does what is just and right, he shall save his life. Because he considered and turned away from all the transgressions that he had committed, he shall surely live; he shall not die. Yet the house of Israel says, ‘The way of the Lord is not just.’ O house of Israel, are my ways not just? Is it not your ways that are not just?

Is this works righteousness? Is this all a covenant of works that we must realize we can’t fulfill so that we put our faith in Jesus?

No.

The Bible is our book when we realize it is all calling us to respond in faith to Jesus. Ezekiel 18 is such a call appropriate to Israel before Christ had come.

Abraham was given such a call.

By faith Abraham obeyed when he was called to go out to a place that he was to receive as an inheritance. And he went out, not knowing where he was going. By faith he went to live in the land of promise, as in a foreign land, living in tents with Isaac and Jacob, heirs with him of the same promise. For he was looking forward to the city that has foundations, whose designer and builder is God.

And Paul’s letter to Romans says likewise:

That is why it depends on faith, in order that the promise may rest on grace and be guaranteed to all his offspring—not only to the adherent of the law but also to the one who shares the faith of Abraham, who is the father of us all, as it is written, “I have made you the father of many nations”—in the presence of the God in whom he believed, who gives life to the dead and calls into existence the things that do not exist. In hope he believed against hope, that he should become the father of many nations, as he had been told, “So shall your offspring be.” He did not weaken in faith when he considered his own body, which was as good as dead (since he was about a hundred years old), or when he considered the barrenness of Sarah’s womb. No distrust made him waver concerning the promise of God, but he grew strong in his faith as he gave glory to God, fully convinced that God was able to do what he had promised. That is why his faith was “counted to him as righteousness.” But the words “it was counted to him” were not written for his sake alone, but for ours also. It will be counted to us who believe in him who raised from the dead Jesus our Lord, who was delivered up for our trespasses and raised for our justification.

Paul describes how people have turned in faith to Jesus, writing,

Do you not know that if you present yourselves to anyone as obedient slaves, you are slaves of the one whom you obey, either of sin, which leads to death, or of obedience, which leads to righteousness? But thanks be to God, that you who were once slaves of sin have become obedient from the heart to the standard of teaching to which you were committed, and, having been set free from sin, have become slaves of righteousness.

The whole book of Proverbs is about trusting in the Lord:

Incline your ear, and hear the words of the wise,
and apply your heart to my knowledge,
for it will be pleasant if you keep them within you,
if all of them are ready on your lips.
That your trust may be in the LORD,
I have made them known to you today, even to you.
Have I not written for you thirty sayings
of counsel and knowledge,
to make you know what is right and true,
that you may give a true answer to those who sent you?

The Bible is one book.  The people Ezekiel is preaching to are sinners. There is no hope for them in a covenant demanding perfect obedience as a condition of salvation. Ezekiel is preaching the Gospel in the age of the Gospel.  As I wrote recently:

Zacharias Ursinus was the principal author of the Heidelberg Catechism and wrote (or allowed to be put together from student notes on his lectures) a commentary on the same. It is available online here.

He wrote that, among other ways, law and gospel differed

In the promises which they make to man. The law promises life upon condition of perfect obedience; the gospel, on the condition of faith in Christ and the commencement of new obedience (p. 3).

Notably, Ursinus is not talking about the Mosaic Covenant when he speaks of “law” here. Rather, the Mosaic Covenant and the Gospel Covenant are the same in substance because they make the same promises on the same conditions.

There is but one covenant, because the principal conditions, which are called the substance of the covenant, are the same before and since the incarnation of Christ; for in each testament God promises to those that repent and believe, the remission of sin; whilst men bind themselves, on the other hand, to exercise faith in God, and to repent of their sins (p. 99).

The “law” then refers to the perfect obedience that Adam was supposed to persevere in as a condition for inheriting glory. The Mosaic Covenant, was for Ursinus, just as it was for the Westminster Divines, an administration of the one covenant of grace.

One covenant of grace. One gospel call. It is all our book.