John 3:33
He that receiveth his testimony hath avouched that God is true.
John 6:27
Labour not for the meat which is perishable, but for that meat which endureth unto life eternal, which the Son of man will give you: for him hath the Father sealed, even God.
2 Corinthians 1:22
who also hath put his seal upon us, and given us the earnest of the Spirit in our hearts.
Ephesians 1:13
In whom ye also [trusted] after ye had heard the word of truth, the gospel of your salvation; in whom also, having believed, ye have been sealed with the holy Spirit of promise,
Ephesians 4:30
And grieve not the holy Spirit of God, whereby ye have been sealed unto the day of redemption.
Revelation 7:2
And I saw another angel ascending from the rising of the sun, having the seal of the living God; and he cried with a loud voice to the four angels to whom power was given for them to hurt the earth and the sea,
Revelation 9:4
And it was told them, Hurt not the grass of the earth, nor any herb, nor any tree, but only those men who have not the seal of God in their foreheads.