Knock knock! Who's there?

Revelation 3:20 "Behold, I stand at the door, and knock: if any man hear my voice, and open the door, I will come in to him, and will sup with him, and he with me."

Here the Lord Jesus in his prophetic vision given to John Gives the request of fellowship. Now for a while there has been contention as to who, is being addressed and what it the request.
Now is this a literal request?
No jesus is not literally visiting people in their buildings since he will not return until the end-times
Acts 1:11 Which also said, Ye men of Galilee, why stand ye gazing up into heaven? this same Jesus, which is taken up from you into heaven, shall so come in like manner as ye have seen him go into heaven.

Since jesus is not literally coming we can also assume that the door is a metaphor as well.
But what is it?

Well some may say the church. But if there are 2-3 Believers the Christ should be spirittually present.
Matthew 18:20 For where two or three are gathered together in my name, there am I in the midst of them.
28:20 Teaching them to observe all things whatsoever I have commanded you: and, lo, I am with you always, even unto the end of the world. Amen.

So it would appear to be fellowship with the believer.
The problem with the congregation is the they are luke warm. not really cold or hot.
Revelation 3:15 I know thy works, that thou art neither cold nor hot: I would thou wert cold or hot. 16 So then because thou art lukewarm, and neither cold nor hot, I will spue thee out of my mouth.
So the church was probably not completely regenerate. Otherwise there would be no purpose for Jesus to give them this offer.
Some have in the hypercalvinistic community have argued that it is wrong to use this in an evangelistic presentation. After all they argue, that this passage was written to a church.
Revelation 3:14 And unto the angel of the church of the Laodiceans write; These things saith the Amen, the faithful and true witness, the beginning of the creation of God;

But while this letter was written to the Laodicean church, was it offered to others as well?
Revelation 3:22 He that hath an ear, let him hear what the Spirit saith unto the churches.
Obviously this is for the benefit of all listeners.

So Jesus is knocking on our heart door. Is ths bizarre theologically?

Wel we believe in our heart
Romans 10 :9 That if thou shalt confess with thy mouth the Lord Jesus, and shalt believe in thine heart that God hath raised him from the dead, thou shalt be saved.

Jesus dwells in our hearts by faith.
Ephesians3:17 That Christ may dwell in your hearts by faith; that ye, being rooted and grounded in love,18 May be able to comprehend with all saints what is the breadth, and length, and depth, and height;19 And to know the love of Christ, which passeth knowledge

So we have Biblical authority That christ wants to dwell in our hearts.
The real question is...
Is He in yours?