How do we know that Christ's righteousness is enough for our salvation?

We know Christ's righteousness is enough for our salvation because it is rooted in the nature of God Himself. Romans 3:21-22 states that the righteousness of God is revealed apart from the law and is given to all who believe in Jesus Christ. This righteousness is not based on our merit but is the perfect fulfillment of the law by Jesus. Furthermore, 2 Corinthians 5:21 explains that Christ, who knew no sin, was made to be sin for us, that we might become the righteousness of God in Him. Therefore, it is not our righteousness that saves us but His—complete and sufficient.