It is no longer a worldly throne and kingdom as it once was but a spiritual throne and kingdom.
Where are Jesus’ throne and kingdom?
They are where he himself is present, reigns, and governs with his word and sacrament, in the church, in the congregation….
We are called into this kingdom. We can find it, within the church, in the community of the faithful, when we receive the word and sacrament of the Lord Jesus Christ and submit to his authority, when we recognize the child in the manger as our Savior and Redeemer and let him bestow on us a new life grounded in love.
From a different angle I affirm this in Kingdom Conspiracy. (Junia, then, is not the only one who is not alone.)