David Wilkerson emphasizes that Jesus' sacrifice on the cross provides believers with peace with God, a peace that is unique to Christianity as it addresses the sin question that remains unresolved in other religions. He explains that Christ maintains this peace through the removal of sin's guilt, the joy and peace found in faith, and the hope of glory. Wilkerson highlights that true peace is the absence of fear, and Jesus actively intercedes for us, ensuring we remain in this peace despite our sins and the accusations of Satan. He reassures that Christ, as our high priest and advocate, protects us from being held captive by our conscience or fear. Ultimately, believers are called to be found in peace when Christ returns.