What does the Bible say about God's covenant with His people?

Scripture teaches us that God's covenant with His people is an eternal agreement that underscores His faithfulness and grace. This covenant predates not only Abraham but also Adam, and even time itself, as God established it before the foundation of the world. Hebrews 13 describes the God of peace, who brought back Jesus from the dead, signifying that our salvation is grounded in the blood of the everlasting covenant (Hebrews 13:20). This covenant assures believers that their salvation is not based on their works but on God’s promise and His mercy towards them. David expressed this in Psalm 23, where he confidently claims the Lord as his shepherd, emphasizing reliance on God's established covenant.