What does being sealed by God mean?

To be sealed by God signifies His divine ownership and protection over His people. This sealing is accomplished through the Holy Spirit, as described in Ephesians 1:13-14, where believers are marked in Him with a seal, the promised Holy Spirit, who is a deposit guaranteeing our inheritance. This assurance indicates that we are set apart for salvation and that our eternal security is assured in Christ. The seal serves as a reminder of our commitment to Him and His unbroken promise of redemption and everlasting life.