• Ephesians 1:13-14
  In Him you also trusted, after you heard the word of truth, the gospel of your salvation; in whom also, having believed, you were sealed with the Holy Spirit of promise, who is the guarantee of our inheritance until the redemption of the purchased possession, to the praise of His glory.
   
• Ephesians 4:30
  And do not grieve the Holy Spirit of God, by whom you were sealed for the day of redemption.
   

Related Scriptures

• Romans 8:9
  But you are not in the flesh but in the Spirit, if indeed the Spirit of God dwells in you. Now if anyone does not have the Spirit of Christ, he is not His.
   
• Romans 8:14
  For as many as are led by the Spirit of God, these are sons of God.