As he prepares to face destruction on the cross he promises to prepare a place for his people where they will live with his Father . Seeing Jesus they have seen the Father . Jesus sends one like himself who will not just live with them, but within them catching them up into the Son’s own relationship with his loving Father where the will cry ‘Daddy’. God in people, people in God.
The Son must die so his people can live through him, knowing himself and his Father forever . No love is like the Father’s love to send his Son for us in the power of the Spirit. In the Son’s death the Triune God becomes eternally favourable toward his people, bearing the jealousy that should have burned against humanity and lavishing great love upon us.