This is a dark world. On every hand the evil that is prevalent in our day attempts to push Jesus to the side; we trivialize the Gospel. When John looked at the throne, one thing he noticed was that there was only room for ONE.
This is a solitary seat. There is only one Jesus!
People try to include Jesus in their life. They try to make room for Him among other things. The reality is that Jesus IS life. You don't make room for breathing -- it happens, or you don't!
There is another, lesser throne. It is the one in each of our hearts. There is also room for only one. The problem with sitting on that throne yourself is that the responsibility is too big. It is so big, that the shadow it casts blocks out any view of God.
The Old Testament story of Jacob illustrates this. Jacob was second in line to his father's estate, but he decided to push the issue. He sat on the throne and called the shots. Eventually, he messed up and had to leave the very place he'd called home.
Years later he came back home, but not until he wrestled with this issue of who's in charge. One night he wrestled with the angel of the Lord, and Jacob finally said, I'm not leaving this place, or letting go of you until the matter of who's going to sit on the throne of my heart is settled.
In that pre-dawn struggle, Jacob got himself off the throne of his heart, and allowed God control. And once Jacob got himself out of the way, he could see the glory of the Lord.
There is a great hymn of the church that helps keep me from crawling back on that throne in my own heart:
Holy, holy, holy! tho' the darkness hide Thee,
Tho' the eye of sinful man Thy glory may not see;
Only Thou art holy; there is none beside Thee,
Perfect in pow'r, in love, and purity.