Passage
At the brightness that was before him his thick clouds passed, hail stones and coals of fire.
At the brightness that was before him his thick clouds passed, hail stones and coals of fire.
Psalms 18:10 And he rode upon a cherub, and did fly: yea, he did fly upon the wings of the wind.
Psalms 18:11 He made darkness his secret place; his pavilion round about him were dark waters and thick clouds of the skies.
Psalms 18:12 At the brightness that was before him his thick clouds passed, hail stones and coals of fire.
Psalms 18:13 The LORD also thundered in the heavens, and the Highest gave his voice; hail stones and coals of fire.
Psalms 18:14 Yea, he sent out his arrows, and scattered them; and he shot out lightnings, and discomfited them.
The verse centers on "brightness", "before", "thick", "clouds", "passed", "hail", "stones", and "coals". It is saying that the verse draws attention to "brightness" and "before", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 11's "He made darkness his secret place his..." into verse 13's "The LORD also thundered in the heavens...", so "brightness" and "before" belong inside that flow. In Psalms context, the local focus is worship, trust, the LORD's kingship, and covenant mercy.
A plain takeaway is to answer the verse's own emphasis on "brightness" and "before" with trust shaped by these words, not by a vague optimism outside the passage.