The topic that Jesus most spoke about was "The Kingdom of God," His Church.
The biblical imagery is clear. Jesus is the King of the eternal, redeemed Davidic kingdom, who holds the "key of David," (Rev. 3:7) representing the office of the vice-regent (Isaiah 22:15-25) --an office which He bestows on Peter (Mat 16:19). Mary is the Queen Mother (1 Kings 2:19) of the eternal, redeemed Davidic Kingdom (Rev. 12:1-5)--the Kingdom of God.
"If he won't listen to the Church, treat him as a pagan or tax collector." --Jesus
Amen. Your post reminds me of a great tape by Dr. Tim Gray of the Augustine Institute in Denver.