Passage
But thou, O God, shalt bring them down into the pit of destruction: bloody and deceitful men shall not live out half their days; but I will trust in thee.
But thou, O God, shalt bring them down into the pit of destruction: bloody and deceitful men shall not live out half their days; but I will trust in thee.
Psalms 55:21 The words of his mouth were smoother than butter, but war was in his heart: his words were softer than oil, yet were they drawn swords.
Psalms 55:22 Cast thy burden upon the LORD, and he shall sustain thee: he shall never suffer the righteous to be moved.
Psalms 55:23 But thou, O God, shalt bring them down into the pit of destruction: bloody and deceitful men shall not live out half their days; but I will trust in thee.
The verse centers on "thou", "shalt", "bring", "down", "destruction", "bloody", "deceitful", and "shall". It is saying that the verse draws attention to "thou" and "shalt", so its meaning should be read from those terms before moving to application.
The prior verse says "Cast thy burden upon the LORD and...", giving immediate footing for "thou" and "shalt". 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 "shalt" with trust shaped by these words, not by a vague optimism outside the passage.