Why do Christians experience peace with God despite ongoing struggles with sin?

While believers are still in the flesh and struggle with sin, their peace with God is secured by the completed work of Christ. The writer of Hebrews emphasizes that even though Christians may falter and experience doubts, their standing before God is based on Christ's righteousness and the peace He has purchased for them. Romans 5:1 confirms that being justified by faith allows believers to have peace with God. This peace is not contingent upon their daily performance, but rather on the unchanging grace of God that sustains them through their trials and weaknesses.