Charles H. Spurgeon on Psalms 135:5

For I know that the LORD is great, and that our Lord is above all gods. The greatness of God is as much a reason for adoration as his goodness, when we are once reconciled to him. God is great positively great comparatively, and great superlatively —"above all gods." Of this the Psalmist had an assured personal persuasion. He says positively, "I know." It is knowledge worth possessing. He knew by observation, inspiration, and realization; he was no agnostic, he was certain and clear upon the matter. He not only knows the greatness of Jehovah, but that as the Adonai, or Ruler, "our Lord" is infinitely superior to all the imaginary deities of the heathen, and to all great ones besides.

"Let princes hear, let angels know,

How mean their natures seem;

Those gods on high, and gods below,

When once compared with him."

Many have thought to worship Jehovah, and other gods with him; but this holy man tolerated no such notion. Others have thought to combine their religion with obedience to the unrighteous laws of tyrannical princes; this, also, the sweet singer of Israel denounced; for he regarded the living God as altogether above all men, who as magistrates and princes have been called gods. Observe here the fourth of the five "fors." Ps 135:3-5,14 contain reasons for praise, each set forth with "for." A fruitful meditation might be suggested by this.