How do we know the gospel’s assurance of salvation is true?

The certainty of the gospel's assurance of salvation stems from multiple scriptural attestations that affirm God's faithfulness. Moreover, Jesus Christ's sacrificial death and victorious resurrection validate that believers can trust in the promises of God. The salvation offered in the gospel is not based on human effort but is a gift of grace affirmed through the individual's personal relationship with Christ. This relationship is evidenced by the work of the Holy Spirit, testifying to believers’ hearts that they are indeed children of God, bringing a profound confidence in their salvation.