Romans 8:16
The Spirit himself bears witness with our spirit that we are children of God,
2 Corinthians 1:22
and who has also put his seal on us and given us his Spirit in our hearts as a guarantee.
2 Corinthians 5:5
He who has prepared us for this very thing is God, who has given us the Spirit as a guarantee.
Ephesians 1:13
In him you also, when you heard the word of truth, the gospel of your salvation, and believed in him, were sealed with the promised Holy Spirit,
2 Corinthians 1:12
For our boast is this, the testimony of our conscience, that we behaved in the world with simplicity and godly sincerity, not by earthly wisdom but by the grace of God, and supremely so toward you.
Ephesians 4:30
And do not grieve the Holy Spirit of God, by whom you were sealed for the day of redemption.
1 John 3:19-22
By this we shall know that we are of the truth and reassure our heart before him;
1 John 4:13
By this we know that we abide in him and he in us, because he has given us of his Spirit.
1 John 5:10
Whoever believes in the Son of God has the testimony in himself. Whoever does not believe God has made him a liar, because he has not believed in the testimony that God has borne concerning his Son.
Romans 8:23
And not only the creation, but we ourselves, who have the firstfruits of the Spirit, groan inwardly as we wait eagerly for adoption as sons, the redemption of our bodies.
Romans 8:26
Likewise the Spirit helps us in our weakness. For we do not know what to pray for as we ought, but the Spirit himself intercedes for us with groanings too deep for words.