Why is Christ's covenant promise important for salvation?

The everlasting covenant promise of Christ is essential because it serves as the foundation for the believer’s hope and assurance of salvation. In Genesis 47, Jacob's appeal to Joseph and his demand for a solemn promise highlights the necessity of assurance and trust in God’s provision. Hebrews 6:17-18 states God’s covenant is unchangeable and provides strong consolation to those who flee for refuge. Believers are anchored in the truth that their salvation is not contingent on their own efforts but secured by Christ’s completed work and His covenant promises. This assurance enables Christians to worship and rest in peace, knowing that everything necessary for their salvation has been guaranteed by Christ.