2 Corinthians 1:22

and mark'd me with his seal, and given me the earnest of the spirit in my heart.

2 Corinthians 5:5

now he that hath prepared us for this very state, is God, who hath given us the spirit as a pledge of it.

Ephesians 1:13-14

by whom you also have heard the word of truth, the gospel of your salvation: and having believed in him, ye were mark'd with the seal of the holy spirit, which was promised:

Ephesians 4:30

grieve not the holy spirit of God, by whom you are sealed against the day of deliverance:

John 6:27

work not for the food which perisheth, but for that which endureth unto everlasting life, and which the son of man shall give unto you, for to him it is that the father, that is God, has given his credentials.

Romans 4:11

and he received the sign of circumcision, as a seal of the justification by that faith, which the uncircumcised have: that he might be the father of all those who believe, tho' they are uncircumcised, that it might be accounted to them also for righteousness:

Romans 8:9

you are not in such a state, but in a spiritual one, provided the divine spirit dwell in you. now if any man have not the spirit of Christ, he is none of his.

Romans 8:14-16

as many as are actuated by the spirit of God, they are the sons of God.

Romans 8:23

and not only they, but even those who have the first fruits of the spirit, even we our selves do inwardly groan for the fruit of our adoption, by the deliverance of our body from corruption.

2 Timothy 2:19

however, the foundation of the divine architect is still immoveable, having this inscription, " the Lord discerns who are his." and, " let every one that invokes the name of the Lord, depart from iniquity."

Revelation 2:17

he that hath an ear, let him hear what the spirit saith unto the churches: to him that overcometh, will I give to eat of the hidden manna, and will give him a white stone, and in the stone a new name written, which no man understands, except he that receives it."

Revelation 7:3

saying, "hurt not the earth, nor the sea, nor the trees, till we have sealed the servants of our God in their foreheads."

Revelation 9:4

and they were commanded not to hurt the fruits of the earth, nor any green thing, nor any tree; but those men who have not the seal of God in their foreheads.

Treasury of Scripture Knowledge

Summary

Who hath also sealed us, and given the earnest of the Spirit in our hearts.

Bible References

The earnest

2 Corinthians 5:5
now he that hath prepared us for this very state, is God, who hath given us the spirit as a pledge of it.
Romans 8:9
you are not in such a state, but in a spiritual one, provided the divine spirit dwell in you. now if any man have not the spirit of Christ, he is none of his.
Ephesians 1:14
and this is the pledge of our inheritance, being given for the deliverance of his peculiar people, to the display of his glory.