Romans 8:9-11, 14

But you are not in the flesh but in the Spirit, if it is so that the Spirit of God dwells in you. But if any man doesn’t have the Spirit of Christ, he is not his. If Christ is in you, the body is dead because of sin, but the spirit is alive because of righteousness. But if the Spirit of him who raised up Jesus from the dead dwells in you, he who raised up Christ Jesus from the dead will also give life to your mortal bodies through his Spirit who dwells in you.

For as many as are led by the Spirit of God, these are children of God.