Adam Clarke on Psalms 33:16

There is no king saved by the multitude of a host - Even in the midst of the most powerful and numerous army, no king is in safety unless he have God's protection. A king is but a man, and may as easily lose his life as one of his common soldiers.

A mighty man is not delivered by much strength - There are times in which his might can be of no avail to him: and unless the mighty, the wise, the honorable, etc., have the protection of God, there is no time in which their might may not be turned into weakness, their wisdom into folly, and their dignity into disgrace.