In this book, the covenant and the promises of God the Father and God the Son had in an agreement regarding the elect (being the children of God from the covenant statutes).

This covenant was made before the universe was created, and it consisted of the Father promising to bring to the Son all whom the Father had to give the world. The Eternal Covenant, then, leads to the Covenant of Grace.

Whereas the Eternal Covenant was made between the Father and the Son, the Covenant of Grace was made between God and Man. In this latter covenant, God promises to Man eternal salvation based upon the sacrifice of Jesus on the cross.

The manifestation of that covenant occurs in our world in a sequence of additional covenants that God made with individuals. This leads to liberation from poverty, sicknesses and destruction. Such as well and examples is well treated in this book from Abraham, Isaac, Jacob.