How do we know that God's promises to His people are secure?

The assurance of God's promises lies in His unchanging nature and sovereignty. As demonstrated in the account of the Israelites' journey, God acted with power to deliver His people and fulfill His covenant. His commands to Joshua during their transition into the promised land underscore the dependence that believers have on His faithfulness. Since God has sovereignly orchestrated events for His glory and the good of His people, believers can confidently trust that His promises will not fail. This reflects the broader Reformed understanding of God's covenantal faithfulness throughout history, culminating in Christ, who secures every promise through His redemptive work.