Why is it important to have assurance of salvation?

Assurance of salvation is vital for a believer's spiritual well-being, as it fosters peace and stability in their walk with God. It allows believers to rest in the promises of God, knowing that they are secure in Christ. The apostle John writes in 1 John 5:13 that he has written these things to those who believe in the name of the Son of God that they may know they have eternal life. This assurance is rooted in faith, not in feelings or performance, which encourages us to live boldly for Christ.