Romans 8:16

The Spirit itself testifies with our spirits that we are God's children,

2 Corinthians 1:22

and put his seal upon us and given us his Spirit in our hearts, as earnest-money.

2 Corinthians 5:5

It is God himself who has prepared me for this change, and he has given me the Spirit as his guaranty.

Ephesians 1:13

You also have heard the message of the truth, the good news of your salvation, and believed in him, and through union with him you have been marked with the seal of the holy Spirit that was promised,

2 Corinthians 1:12

For my boast is what my conscience tells me, that my relations to the world and still more to you have been marked by pure motives and godly sincerity, not by worldly shrewdness but by the favor of God.

Ephesians 4:30

You must not offend God's holy Spirit, with which you have been marked for the Day of Redemption.

1 John 3:19-22

From that we can be sure that we are on the side of the truth, and satisfy our consciences in God's sight,

1 John 4:13

This is the way we know that we keep in union with him and he does with us??ecause he has given us some of his Spirit.

1 John 5:10

Whoever believes in the Son of God possesses that testimony in his heart. Anyone who will not believe God has made him a liar, for he has refused to believe the testimony that God has borne to his Son.

Romans 8:23

More than that, we ourselves, though we have in the Spirit a foretaste of the future, groan to ourselves as we wait to be declared God's sons, through the redemption of our bodies.

Romans 8:26

In the same way the Spirit helps us in our weakness, for we do not know how to pray as we should, but the Spirit itself pleads for us with inexpressible yearnings,

Treasury of Scripture Knowledge

Summary

The Spirit itself beareth witness with our spirit, that we are the children of God:

General references

Bible References

Spirit

Romans 8:23
More than that, we ourselves, though we have in the Spirit a foretaste of the future, groan to ourselves as we wait to be declared God's sons, through the redemption of our bodies.
2 Corinthians 1:22
and put his seal upon us and given us his Spirit in our hearts, as earnest-money.
2 Corinthians 5:5
It is God himself who has prepared me for this change, and he has given me the Spirit as his guaranty.
Ephesians 1:13
You also have heard the message of the truth, the good news of your salvation, and believed in him, and through union with him you have been marked with the seal of the holy Spirit that was promised,
Ephesians 4:30
You must not offend God's holy Spirit, with which you have been marked for the Day of Redemption.
1 John 4:13
This is the way we know that we keep in union with him and he does with us??ecause he has given us some of his Spirit.

With our

2 Corinthians 1:12
For my boast is what my conscience tells me, that my relations to the world and still more to you have been marked by pure motives and godly sincerity, not by worldly shrewdness but by the favor of God.
1 John 3:19
From that we can be sure that we are on the side of the truth, and satisfy our consciences in God's sight,
1 John 5:10
Whoever believes in the Son of God possesses that testimony in his heart. Anyone who will not believe God has made him a liar, for he has refused to believe the testimony that God has borne to his Son.

General references

Galatians 3:26
For in Christ Jesus you are all sons of God through your faith.