How do we know that salvation is assured through God's promises?

The assurance of salvation comes from God's exceeding great and precious promises as outlined in 2 Peter 1:4. These promises define the covenant of grace and highlight how Christ's sacrificial work ensures complete salvation for the elect. God's willingness to confirm His promises with an oath, as seen in Hebrews 6 regarding His covenant with Abraham, assures believers that what He has promised will indeed come to pass. This underscores the sovereignty of God in salvation, with the gospel serving as the vehicle through which we understand and embrace these divine assurances.