Eph 1

1:12 That we should be to the praise of his glory, who first trusted in Christ.

1:13 In whom ye also trusted, after that ye heard the word of truth, the gospel of your salvation: in whom also after that ye believed, ye were sealed with that holy Spirit of promise,

1:14 Which is the earnest of our inheritance until the redemption of the purchased possession, unto the praise of his glory.

4:30 And grieve not the holy Spirit of God, whereby ye are sealed unto the day of redemption.