How do we know we have eternal life according to Scripture?

The assurance of eternal life is grounded in the truth that God has prepared His people for glory. In 2 Corinthians 5:1-5, Paul describes how we are given a 'building of God' eternal in the heavens. This confidence stems from the belief that Christ's sacrificial death guarantees our forgiveness and acceptance before God. Furthermore, the Holy Spirit serves as an earnest of our inheritance, providing believers with the conviction that they are indeed destined for eternal life. Thus, our understanding of salvation and eternal life is confirmed through Scripture, the work of Christ, and the gift of faith.