Romans 8:12-16

So then, brothers and sisters, we are under obligation, not to the flesh, to live according to the flesh—

for if you are living in accord with the flesh, you are going to die; but if by the Spirit you are putting to death the deeds of the body, you will live.

For all who are being led by the Spirit of God, these are sons and daughters of God.

For you have not received a spirit of slavery leading to fear again, but you have received a spirit of adoption as sons and daughters by which we cry out, “Abba! Father!”

The Spirit Himself testifies with our spirit that we are children of God,