How do we know God's covenant with His people is everlasting?

The concept of God's everlasting covenant is illustrated in Galatians 3:15, where the apostle Paul explains that a confirmed covenant cannot be altered. Christ embodies this covenant, fulfilling the promises made to Abraham and ensuring that salvation is by grace and not works. This covenant remains steadfast and is established through Christ's sacrificial work, making it eternal. Believers need not fear losing their standing because nothing can be added to or taken from this promise; it is secured in Christ’s blood and guarantees our eternal life and relationship with God.