How do we know Christ's redemption through His blood is sufficient?

In Colossians 1:14, Paul confidently states that in Christ we have redemption through His blood, which signifies not just a potential for redemption but the actual realization of it. The blood of Christ serves as the basis for our forgiveness and was sufficient to atone for all sins. This is affirmed in Romans 3:24, where we see that we are justified freely by His grace through the redemption that is in Christ Jesus. Thus, our redemption is not an offer but a reality accomplished at Calvary.