What does the Bible say about the everlasting covenant?

The everlasting covenant is a central theme in Scripture, particularly highlighted in Ephesians 1. This covenant was established before the foundation of the world, wherein God planned the salvation of a specific people. The Father chose these individuals in Christ, and the Son executed the plan through His redemptive work on the cross. The Holy Spirit applies this work, regenerating those whom God has chosen, ensuring that the entirety of salvation is of the Lord. All parts of the Trinity are involved, showcasing a unified intention in redeeming humanity and bringing sinners to Himself, which ultimately brings glory to God.