In order that you may be stirred up and be active concerning this, calmly consider first of all that there are but two kings in this world, each having a kingdom: the kingdoms of Christ and of the devil, which are mortal enemies to each other. A third kingdom does not exist. Every person upon earth is either a subject of King Jesus or of the devil, the prince of darkness. No matter who you are individually, you are truly a subject of one of these two kingdoms. You are neither neutral nor a subject of both kingdoms simultaneously. Therefore, to which kingdom do you presently belong? What do you have to say for yourself? If you neither know nor have ever given this any thought, come and sit next to me for a moment; let us consider this matter, and then make a heartfelt and eternal choice. Whose subject do you wish to be? Whom do you choose to be your king?
WILHELMUS À BRAKEL, THE CHRISTIAN’S REASONABLE SERVICE, VOL. 2, 56.