Bible Verses About Seals: Appropriation of saints to God by the Spirit

who also sealed us, and gave the earnest of the Spirit in our hearts.

in whom ye also, having heard the word of the truth--the good news of your salvation--in whom also having believed, ye were sealed with the Holy Spirit of the promise,

and make not sorrowful the Holy Spirit of God, in which ye were sealed to a day of redemption.