How do we know salvation is through Christ's performance?

The foundation of our salvation is not dependent on our actions but wholly on the completed work of Jesus Christ. As noted in the sermon, 'He performeth all things for me,' indicating that Christ's fulfillment of the law and His atoning sacrifice are sufficient for our redemption. Scriptures such as 2 Corinthians 5:18 affirm this, stating that 'all things are of God, who hath reconciled us to himself by Jesus Christ.' This assures believers that their salvation is secure because it rests upon Christ's performance, which is perfect and complete. John 17:2 states that Christ has authority to give eternal life to those whom the Father has given to Him, verifying the efficacy of His redemptive work.