Let’s try a bit of word substitution.
If you belonged to the state, it would love you as its own. As it is, you do not belong to the state, but I have chosen you out of the state. That is why the state hates you. (John 15:19)
They are not of the state, even as I am not of it. (John 17:16)
I in them and you in me. May they be brought to complete unity to let the state know that you sent me and have loved them even as you have loved me. (John 17:23)
Makes you think doesn’t it? How much should the church expect of the state? How much should the state expect of the church? Who gets to decide? What are the implications of calling our nation or any nation a Christian nation?