What does the Bible say about the Eternal Covenant?

The Eternal Covenant is primarily an agreement made by God with Himself regarding the salvation of His people. It is mentioned in various places in Scripture, encapsulating the gospel message. Paul indicates in Ephesians 1:1-14 that this covenant outlines God's sovereign choice to save a people, the work of Christ as their Redeemer, and the role of the Holy Spirit in calling and securing them. This covenant existed before the foundation of the world, emphasizing that it is eternal and magnificent in its assurance of salvation for those chosen by God.