We can be assured of our salvation by looking to Christ and depending on His righteousness, not our own.
The assurance of salvation primarily rests upon our faith in Jesus Christ and His finished work. When we look to Christ, as stated in Hebrews 12:2, we acknowledge Him as the author and finisher of our faith. Furthermore, Scripture provides clarity that those who truly belong to Christ will exhibit a genuine faith that perseveres. For example, 1 John 2:19 explains that those who fall away from the faith never truly belonged, indicating that genuine salvation results in a steadfast commitment to Christ. The consistent themes of reliance on God's grace and the internal witness of the Holy Spirit in the life of a believer serve to assure them of their salvation (Romans 8:16). Ultimately, the believer's confidence emerges from resting in God's promise and Christ’s redemptive work, maintaining that we are not self-made but God's handiwork (Ephesians 2:10).
Scripture References:
Hebrews 12:2, 1 John 2:19, Romans 8:16, Ephesians 2:10, John 8:32, 1 Peter 1:5
Commentary