What does the Bible teach about faith and assurance?

Faith in Christ is not only a means to salvation but also a source of assurance. The scriptures tell us that faith involves believing the record God has given of His Son (1 John 5:10-11). This record is the foundational truth upon which our assurance rests. When we trust in the finished work of Jesus, we are filled with confidence that we are justified and accepted by God. Paul encourages believers to be strong in the grace that is in Christ Jesus (2 Timothy 2:1), illustrating that our assurance should be rooted in the strength of Christ's grace rather than our own abilities. Furthermore, the promise of Isaiah 26:3 assures us that peace is given to those whose minds are steadfast on God, reflecting the comfort found in faith.