Passage
For by thee I have run through a troop; and by my God have I leaped over a wall.
For by thee I have run through a troop; and by my God have I leaped over a wall.
Psalms 18:27 For it is thou that savest the afflicted people; but the haughty eyes wilt thou bring down.
Psalms 18:28 For it is thou that makest my lamp to shine: Jehovah my God enlighteneth my darkness.
Psalms 18:29 For by thee I have run through a troop; and by my God have I leaped over a wall.
Psalms 18:30 As for God, his way is perfect; the word of Jehovah is tried: he is a shield to all that trust in him.
Psalms 18:31 For who is God save Jehovah? and who is a rock if not our God?
The verse centers on "thee", "through", "troop", "leaped", "over", and "wall". It is saying that the verse draws attention to "thee" and "through", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 28's "For it is thou that makest my..." into verse 30's "As for God his way is perfect...", so "thee" and "through" 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 "thee" and "through" with trust shaped by these words, not by a vague optimism outside the passage.