"Democracy" is defined as: "government by the people." "Demos" means "people.
A "kingdom" refers to people ruled by a king.
Ruled by people. Ruled by a king.
One is rule from the bottom up. The other is rule from the top down.
Obviously these two forms of government are opposites.
The world today is moving toward democratic government. The United States is among those who are leading the way.
Unless I am mistaken, we Christian people view democracy as the same as the Kingdom of God, or at least friendly to the Kingdom of God.
The reason we do not see the difference is that we do not understand that the religion of Christianity throughout its history, to the present hour, is largely a result of self-will. No doubt there have been notable exceptions.
The reason is, the program of redemption has not moved forward to the crucifixion of our will. There have been scouts out ahead, but the wagon train is just now coming in sight of this critical aspect of salvation.
Jessie Penn-Lewis has been, I think, one of the proponents of death to self. This may have been true also of A. B. Simpson. I am sure there have been many others who have experienced and taught inner crucifixion.
I have not heard many in our day emphasize the death to self that is necessary if we are to attain to the resurrection of the body. We seem to be pretty well limited to forgiveness through the blood. There are many however who have sought to press forward into the works of the Spirit of God.