Pink is extremely helpful in thinking about covenant theology. He really helped me see the nature of the Mosaic Covenant, especially how it was really supplemental and subservient to the Abrahamic Covenant. Here were some quotes that were very helpful to me. (It’s important to note that Pink uses the language of everlasting covenant, or covenant of grace, to mean what many would usually call the covenant of redemption, or the eternal plan of the Trinity to save the elect in Christ.)
“True believers among them [Israel] were personally dealt with according to the Covenant of Grace, even as true Christians now are; and unbelievers were under the Covenant of Works, and liable to condemnation by it, as at present: yet, the national covenant was not strictly either the one or the other, but had something in it of the nature of each” (149).
“The Sinaitic covenant in no way interfered with the divine administration of either the everlasting covenant of grace (toward the elect) nor the Adamic covenant of works (which all by nature lie under); it being in quite another region [viz. a national covenant for typical purposes]” (152).
“Now under the Abrahamic covenant, as we saw when examining the same, there was a striking conjunction of grace and law, yet the former more largely predominated—as is evident from the frequent references to the ‘promises’ (Gal. 3:7, 8, 16, 18, 21) and from the ‘preached before the gospel to Abraham’ (Gal. 3:8); so too under the Mosaic economy grace and law were both exhibited, yet the latter was far more conspicuous—as is clear from the contrast drawn in ‘for the law was given by Moses, but grace and truth came by Jesus Christ.’ The Sinaitic covenant was supplementary and subsidiary to the Abrahamic, serving to promote both its natural and spiritual ends. Its object was not to convey, but to direct life” (203).
Here we see that the Mosaic Covenant was not conveying grace but only a means to direct the Israelites to the grace of the everlasting covenant.
“The new covenant actually does for those who are in it what the old one failed to do for the Jewish people. To them God gave a revelation, but it came to them in letter only; to the New Testament saints His revelation comes in power also (I Cor. 4:20; I Thess. 1:5). To them God gave the law as written upon tables of stone; to the New Testament saints God also gives the law, but writes it upon their hearts. [Here we see the moral law (what is written on our hearts) is summed up in the Ten Commandments).] Consequently, they chafed at the law, whereas we (after the inward man) delight in it (Rom. 7:22). […] That which makes all the difference is that the Holy Spirit is given to indwell and energize the latter, which He was not in those who were in the Sinaitic covenant as such—we say ‘as such,’ for there was ever a godly remnant who were indwelt by the Spirit on the ground of the everlasting covenant” (300).
“While God requires the same flawless obedience under the new covenant, yet provision has been made for failure, and if our efforts be genuine, God accepts an imperfect obedience from us because its defects are fully compensated for by the infinite merits of Christ which are reckoned to the believer’s account” (318).
“It is important that we should distinguish clearly between the everlasting covenant which God made before the foundation of the world, and the Christian covenant which He has instituted in the last days of the world’s history. First, the one was made in a past eternity; the other is made in time. Second, the one was made with Christ alone; the other is made with all His people. Third, the one is without any conditions so far as we are concerned; the other prescribes certain terms which we must meet. Fourth, under the one Christ inherits; under the other Christians are heirs: in other words, the inheritance Christ purchased by His fulfilling the terms of the everlasting covenant is now administered by Him in the form of a ‘testament’” (321).
Here, Pink distinguishes between the everlasting covenant of grace/redemption and the New Covenant. The everlasting covenant was working itself out from all eternity saving people, while the New Covenant was the everlasting covenant fully ratified and revealed in time and administered with power. This distinction seems to set Pink apart from 1689 federalists who claim the New Covenant is the covenant of grace.
“Just as Hagar was rightfully the handmaid of Sarah but was wrongfully accorded the position of Abraham’s wife, so the Sinaitic covenant was designed to supplement the Abrahamic but was perverted by the Jews when they sought from it salvation and fruitfulness” (331-332). The Mosaic Covenant was intended to be a tutor to show the Israelites toward grace, but the unrepentant were under it as a covenant of works to condemnation.