Why is the concept of covenant significant in Christianity?

Covenants in Scripture represent binding agreements initiated by God with His people, signifying His commitment and faithfulness. In Psalm 111:9, the psalmist notes, 'He hath commanded His covenant forever,' which highlights its perpetual nature. The covenant of grace reveals God's plan of redemption through Jesus Christ, where believers are assured of their relationship with Him. Furthermore, the covenant emphasizes that salvation is God's work, ensuring that all who are called will come to Him and be saved. This concept provides assurance to believers of their secure standing before God, rooted in His eternal promises rather than their own merit.