Passage
Let them, that feare the Lord, nowe say, That his mercie endureth for euer.
Let them, that feare the Lord, nowe say, That his mercie endureth for euer.
Psalms 118:2 Let Israel now say, That his mercy endureth for euer.
Psalms 118:3 Let the house of Aaron nowe say, That his mercy endureth for euer.
Psalms 118:4 Let them, that feare the Lord, nowe say, That his mercie endureth for euer.
Psalms 118:5 I called vpon the Lord in trouble, and the Lord heard me, and set me at large.
Psalms 118:6 The Lord is with mee: therefore I will not feare what man can doe vnto me.
The verse centers on "feare", "lord", "nowe", "mercie", "endureth", and "euer". It is saying that the verse draws attention to "feare" and "lord", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 3's "Let the house of Aaron nowe say..." into verse 5's "I called vpon the Lord in trouble...", so "feare" and "lord" 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 "feare" and "lord" with trust shaped by these words, not by a vague optimism outside the passage.