How does God assure us of eternal life?

In 2 Timothy 1:10, we learn that Jesus Christ has abolished death and brought life and immortality to light through the gospel. This revelation of salvation gives believers confidence in their eternal life. The assurance of eternal life is a central element of the gospel message; by faith in Christ, we are promised a life that transcends earthly existence. Furthermore, the sealing of the Holy Spirit, as noted in Ephesians 1:13, serves as a guarantee that God will fulfill His promises to His people, confirming their eternal security in Christ.