How do we know Christ is our only hope for heaven?

Christ is the sole source of hope for salvation because He lived a perfectly righteous life, fulfilling the law entirely. His nature is righteousness; thus, everything He did on behalf of His people was perfect, making Him the only one fit to bear the sins of the world. In Him, we find that all promises of God to save and redeem are fulfilled, ensuring that those who believe in Him are counted as righteous before God. Salvation is not based on our works but on His completed work on the cross, which allows believers to confidently claim their place in heaven.