Ephesians 1:13,14
In whom you also trusted, after that you heard the word of truth, the gospel of your salvation: in whom also after that you believed, you were sealed with that holy Spirit of promise,
Nave's Topical Index—AKJV

Ephesians 4:30
And grieve not the holy Spirit of God, whereby you are sealed to the day of redemption.
Nave's Topical Index—AKJV

2 Corinthians 1:22
Who has also sealed us, and given the earnest of the Spirit in our hearts.
Nave's Topical Index—AKJV