The warning of rejecting the gospel is for those who do not believe the gospel is good. The warning of rejecting the gospel applied to those who believe the gospel is good is unbelief. Those people who are warned of rejecting the gospel should reject it because it is so free. The goodness of the gospel should make man feel small. It should separate the chaff from the wheat in responding to its goodness and free reception between those who increase in praise as it is received in greater freedom and those those people who retreat in grief as it is exalted in the work of Christ.
We do not believe that unbelief is healed in the warning but we believe that it is made right by receiving the gospel message. So the healing is not in the message of the gospel but in the gospel itself. To believe the gospel or to be encouraged in the gospel must be through the gospel message.
This is why the gospel does not rehearse our choice to believe. It simply states that we are Gods chosen people. We are Gods covenant people. When a christian looks back at the beginning of his salvation He can only trust what God has promised and not the genuineness of his own choice. Because the gospel is only free when it comes by Gods choice. This is expressed in the OT in the teaching of Gods unfailing love. The love of God is perfect toward us in acting according to His law in granting us all that we need. This salvation is in God alone. In order for God to meet the demands of His full and free offer He must do the work necessary to make salvation complete so that we are preserved to the end. This use of the petition of Gods unfailing love by David is the foundation of his confidence that he will receive from God all that he needs.
David uses the unfailing love of God in an impersonal way so that it is not dependent on any other object than in God alone in order to receive deliverance. Gods law that is satisfied in Christ now becomes our advocate. In Christ the curse of the law has been lifted from us. The curse was the weight that enforced the warning of rejecting the gospel. But now the laws pronouncement in the curse has become the legal enforcement that delivers us. We believe that when we are saved we are definitively sanctified . We are made as holy as Christ. We are already complete in Christ. But we still must oppose the cursed world and the corruption that dwells in us. But if we accepted that we are obligated to the law that produces fear, shame, lack of faith, and pain as the necessary good that produces patience then the law has not fully been satisfied in Christ. The work of the curse in us is Gods will.
But we believe that shame has been destroyed. If shame was a positive work done in us by the law then the curse works to make us holy. But we know that the power of the curse was destroyed in the work of Christ. So the curse of the law now becomes our protection against blame, fear, unbelief etc. The curse represents Gods judicial pronounce in proving His covenant faithfulness that He alone will preserve our salvation from one deliverance to another. To pronounce the curse is to grow in our confidence that we will not trust in any love that does not rise up to the level of goodness as displayed in Gods perfect law.
Ps 25 3 No one whose hope is in you
will ever be put to shame", Not by our effort but by God opposing it in the curse..3b.but they will be put to shame
who are treacherous without excuse".
Ps 40 15 May those who say to me, "Aha! Aha!"
be appalled at their own shame.
16 But may all who seek you
rejoice and be glad in you;
may those who love your salvation always say,
"The LORD be exalted!".... We stand on the other side of the law as in pronouncing.