Passage
In peace will I both lay me down and sleep; For thou, Jehovah, alone makest me dwell in safety. Psalm 5 For the Chief Musician; with the Nehiloth. A Psalm of David.
In peace will I both lay me down and sleep; For thou, Jehovah, alone makest me dwell in safety. Psalm 5 For the Chief Musician; with the Nehiloth. A Psalm of David.
Psalms 4:6 Many there are that say, Who will show us [any] good? Jehovah, lift thou up the light of thy countenance upon us.
Psalms 4:7 Thou hast put gladness in my heart, More than [they have] when their grain and their new wine are increased.
Psalms 4:8 In peace will I both lay me down and sleep; For thou, Jehovah, alone makest me dwell in safety. Psalm 5 For the Chief Musician; with the Nehiloth. A Psalm of David.
The verse centers on "peace", "both", "down", "sleep", "thou", "jehovah", "alone", and "makest". It is saying that the verse draws attention to "peace" and "both", so its meaning should be read from those terms before moving to application.
The prior verse says "Thou hast put gladness in my heart...", giving immediate footing for "peace" and "both". 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 "peace" and "both" with trust shaped by these words, not by a vague optimism outside the passage.