Charles H. Spurgeon on Psalms 103:19

The Lord hath prepared his Throne. The word signifies establisthed as well as prepared, and might be so rendered. Due preparation is the natural way to the establishment of a thing; hasty resolves break and moulder. This notes,

1. The peculiarity of his authority. He prepares it, and none else for him. It is a dominion that originally resides in his nature, not derived from any by birth or commission; he alone prepared it. He is the sole cause of his own kingdom; his authority therefore is unbounded, as infinite as his nature. None can set laws to him, because none but himself prepared his throne for him. As he will not impair his own happiness, so he will not abridge himself of his own authority.

2. Readiness to exercise it upon due occasions. He hath prepared his throne, he is not at a loss, he needs not stay for a commission or instructions from any how to act. He hath all things ready for the assistance of his people, he hath rewards and punishments; his treasures trod axes, the great mark of authority lying by him, the one for the good, the other for the wicked. His mercy he keeps by him for thousands, Ex 34:7; his arrows he hath prepared by him for rebels, Ps 7:13.

3. Wise management of it. It is prepared: preparations imply prudence; the government of God is not a rash and heady authority. A prince upon his throne, a judge upon the bench, manages things with the greatest discretion, or should be supposed so to do.

4. Successfulness and duration of it. He hath prepared or established it. It is fixed, not tottering; it is an unmovable dominion; all the strugglings of men and devils cannot overturn it, nor so much as shake it. It is established above the reach of obstinate rebels; he cannot be deposed from it, he cannot be mated in it. His dominion, as himself abides for ever. And as his counsel, so his authority, shall stand; and "he will do all his pleasure, " Isa 46:10. Stephen Charnock.