The Christian is "one" with God., as that is what "born again" is describing.
This is Eternal Spiritual union with God that is restored by SALVATION...., and this is the reason that Jesus came here to die on The Cross..... = its to restore us into eternal spiritual union with God.......... that Adam lost for us all.
2nd Adam RESTORES to the Believer... what 1st Adam lost.
So, when we are born again by God's Holy Spirit.... we are born again into God's Holy Spirit,.... as that is "Spiritual Union" with God.
Jesus teaches this as :
"""""That they all may be one; as thou, Father,
art in me, and I in thee, that
they also may be ONE in US... that the world may believe that thou hast sent me.""""
New International Version
that all of them may be one, Father, just as you are in me and I am in you. May they also be
in US so that the world may believe that you have sent me.
New Living Translation
I pray that they will all be one, just as you and I are one—as you are in me, Father, and I am in you. And may they be
in us so that the world will believe you sent me.
English Standard Version
that they may all be one, just as you, Father, are in me, and I in you, that they also may be
in us, so that the world may believe that you have sent me.
Berean Standard Bible
that all of them may be one, as You, Father, are in Me, and I am in You. May they also be in Us, so that the world may believe that You sent Me.
Berean Literal Bible
that all may be one, as You, Father,
are in Me, and I in You, that they also may be in Us, that the world may believe that You sent Me.
King James Bible
That they all may be one; as thou, Father,
art in me, and I in thee, that they also may be
One in Us: that the world may believe that thou hast sent me.
New King James Version
that they all may be one, as You, Father,
are in Me, and I in You; that they also may be
One in US that the world may believe that You sent Me.