Passage
For Thou a poor people savest, And the eyes of the high causest to fall.
For Thou a poor people savest, And the eyes of the high causest to fall.
Psalms 18:25 With the kind Thou showest Thyself kind, With a perfect man showest Thyself perfect.
Psalms 18:26 With the pure Thou showest Thyself pure, And with the perverse showest Thyself a wrestler,
Psalms 18:27 For Thou a poor people savest, And the eyes of the high causest to fall.
Psalms 18:28 For Thou--Thou lightest my lamp, Jehovah my God enlighteneth my darkness.
Psalms 18:29 For by Thee I run--a troop! And by my God I leap a wall.
The verse centers on "thou", "poor", "people", "savest", "eyes", "high", "causest", and "fall". It is saying that the verse draws attention to "thou" and "poor", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 26's "With the pure Thou showest Thyself pure..." into verse 28's "For Thou--Thou lightest my lamp Jehovah my...", so "thou" and "poor" 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 "thou" and "poor" with trust shaped by these words, not by a vague optimism outside the passage.