Passage
Let them now that fear Jehovah say, That his lovingkindness [endureth] for ever.
Let them now that fear Jehovah say, That his lovingkindness [endureth] for ever.
Psalms 118:2 Let Israel now say, That his lovingkindness [endureth] for ever.
Psalms 118:3 Let the house of Aaron now say, That his lovingkindness [endureth] for ever.
Psalms 118:4 Let them now that fear Jehovah say, That his lovingkindness [endureth] for ever.
Psalms 118:5 Out of my distress I called upon Jehovah: Jehovah answered me [and set me] in a large place.
Psalms 118:6 Jehovah is on my side; I will not fear: What can man do unto me?
The verse centers on "fear", "jehovah", "lovingkindness", "endureth", and "ever". It is saying that the verse draws attention to "fear" and "jehovah", 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 now say..." into verse 5's "Out of my distress I called upon...", so "fear" and "jehovah" 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 "fear" and "jehovah" with trust shaped by these words, not by a vague optimism outside the passage.