What does the Bible say about being sealed by God?

In Revelation 7, we see the sealing of God's servants, which signifies protection and ownership. This seal indicates that God's elect are preserved from the coming judgment, as seen when God commands the angels to refrain from harming the earth until His servants are sealed. The seal protects against tampering and signifies that they genuinely belong to God, who knows them intimately. Being sealed is a profound assurance of our identity and security in Christ, as noted in various scriptures that underline our intimate relationship with God, such as in John 6:27 and 2 Timothy 2:19, where God’s mark indicates His ownership of His people.