How do we know the promises of Christ are secure?

The security of Christ's promises is rooted in the truth that His testament came into force after His death. This event is the pivotal moment that provides assurance to believers that they have a confirmed inheritance. Hebrews 9:17 highlights that once the testator dies, the will gains strength, signifying that every promise made to the church is guaranteed. Moreover, Jesus, having risen, acts as the administrator who ensures that each promise is fulfilled, thus reinforcing the certainty of His grace and faithfulness to His people.