I would tell you that just like the law is written upon the hearts of the new covenant believer, so too this covenant is transformed into the covenant made through Jesus. So, we agree but disagree. I do believe God is honoring his promises to Abraham, the same way he is honoring the promises to Israel made through Moses.
Both Abraham and Moses were shown and promised Jesus the Messiah. All covenants and promises lead to him. The promises made to Abraham are fulfilled in the covenant made through Jesus. The prophet Isaiah speaks of the Lord making an everlasting covenant in regards to Israel. Yet, this covenant is not referring to Abraham, nor Moses.
Isaiah 42:6
“I, the Lord, have called you in righteousness; I will take hold of your hand. I will keep you and will make you to be
a covenant for the people and a light for the Gentiles,
Isaiah 49:8
[
Restoration of Israel ] This is what the Lord says: “In the time of my favor I will answer you, and in the day of salvation I will help you; I will keep you and will make you to be
a covenant for the people, to restore the land and to reassign its desolate inheritances,
Isaiah 61:8
“For I, the Lord, love justice; I hate robbery and wrongdoing. In my faithfulness
I will reward my people and make an everlasting covenant with them.
This speaks of Jesus. The covenant is made through Jesus, not Abraham, not Moses. Though the promises of those covenants withstand. Because all covenants lead to and promised their redemption, through Jesus the Messiah.
Humble question. You believe in dual covenant theology?