What should Christians do when they sin?

As articulated in 1 John 1:9, when Christians sin, they are called to confess those sins to God, who is faithful and just to forgive them. This confession is tied into the understanding of the trespass offering; it reveals an acknowledgment of sin and a dependence on God's grace. Christians recognize that they are still capable of sinning, despite having been justified by faith. Therefore, relying on Christ as our high priest and advocate allows believers to receive continual cleansing through His blood and righteousness. This ongoing reliance on grace and the act of confession cultivates a humble attitude and fosters spiritual growth in the lives of believers.