The Christian can struggle with assurance of salvation, feel tormented by past sins, or disbelieve that they could truly be saved. …The truth is that only the devil makes one look back at sin—Christ makes them look back to His work on the cross. That is where the Christian must place their confidence. God commands His people to be certain of their salvation and to know the truth that they are saved as seen in 1 John 5. Christians are encouraged to not be so busied with the state of their spiritual health that they make themselves ill but instead lay hold of the promise of salvation and rest in Christ.
