How do we know we are sealed by the Holy Spirit?

The sealing of the Holy Spirit is evidenced in the life of a believer who has heard and believed the gospel. Ephesians 1:13 indicates that this sealing occurs after faith, as the Holy Spirit confirms the truth of God's promises in the heart of the believer. The Spirit's work in guiding believers into all truth and the confidence they have in Christ serve as indicators of their sealing. Believers find assurance in the Holy Spirit’s presence, which is the earnest of their inheritance until the day of redemption.