How do we know that Christ's death brings holiness?

The death of Christ is foundational to the doctrine of holiness as it provides atonement for our sins and establishes our righteousness before God. In 1 John 3:5, it is stated that Jesus was manifested to take away our sins, highlighting this redemptive work. Through His sacrifice, believers are not only forgiven but are also given a new identity and nature that desires to live righteously. This is evident in the transformation described in Romans 6, where believers are called to walk in newness of life, empowered by the Spirit. Thus, holiness is intrinsically linked to the redemptive work of Christ.