At the moment of salvation, the Holy Spirit indwells believers and seals them.
- having also believed, you were sealed in Him with the Holy Spirit of promise, - Ephesians 1:13
Being sealed with the Holy Spirit indicates that believers belong to God.
- you were sealed in Him with the Holy Spirit… with a view to the redemption of God’s own possession, - Ephesians 1:13-14
- Nevertheless, the firm foundation of God stands, having this seal, The Lord knows those who are His, - 2 Timothy 2:19
- Do not grieve the Holy Spirit of God, by whom you were sealed for the day of redemption. - Ephesians 4:30
Because believers are sealed with the Holy Spirit, they are deputized as ambassadors of Christ.
- Therefore, we are ambassadors for Christ… - Ephesians 5:20