How does the Holy Spirit secure a believer's salvation?

The work of the Holy Spirit is vital in guaranteeing the believer's position in Christ. Ephesians 1:13-14 teaches that believers are sealed with the Holy Spirit, marking them as God's possession. This sealing serves as a pledge of their future inheritance and assures them that they will be kept until the day of redemption. Furthermore, the Holy Spirit's role is to empower and sustain the believer's faith, actively working within them to persevere in their walk with God. Thus, the Holy Spirit is instrumental in providing assurance and security in the salvation of every true believer.