What does it mean that Christ holds the keys of hell and death?

In Revelation 1:18, Christ declares that He holds the keys of hell and death, illustrating His sovereign power over both life and death. This truth reassures believers that while the reality of death is present, it does not have the final say for those in Christ. His resurrection guarantees our victory over death and the promise of eternal life. However, this statement also serves as a warning to those outside of faith, as it emphasizes Christ's authority to judge and determine eternal destinies. For believers, knowing that Christ possesses these keys instills confidence and hope, as we are secured in His grace and love.