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Let me shed more light on this. The New Testament testifies that Abraham is the father of
all who believe in God, whether Israelite or not.
Paul, through the Holy Spirit confirms to both
Israelite and Gentile that as long as they share in the Faith, they are both the descendants of
Abraham. We clearly see that the everlasting covenant is the covenant that was confirmed to
Abraham. This same covenant appears again in David’s time when God again promises to
establish the everlasting covenant.
A more elaborate explanation of this is found in Isaiah 9:7
where again, the everlasting covenant resurfaces again.
The fact that the covenant with Abraham, the father of Faith was an everlasting one
obviously means that it will persist through to the New Testament. Isaiah 9:6-7 speaks of the
Messiah, Jesus Christ who comes to rule on David’s throne and whose reign has no end. This
introduces us the continuation from Abraham to David and finally to Jesus Christ. This
everlasting covenant is to be enjoyed by everyone who believes in Jesus and partakes of His
salvation, ultimately leading to eternal life in full realization of the covenant.
To complete the understanding of the everlasting covenant, when God promised
Abraham the nations within the everlasting covenant, He was referring to everyone who would
submit to God’s plan of salvation. His plan of salvation was that persons believe in Jesus because
it is only through Him that the world can gain access to eternal life.
Since Jesus is the only one
who will rule forever, it turns out that the only way that the everlasting covenant of Abraham is
confirmed is through Jesus Christ. In summation, Jesus told the Israelites that they should only