Passage
I pray you, let the house of Aaron say, That, to the age <FI>is<Fi> His kindness.
I pray you, let the house of Aaron say, That, to the age <FI>is<Fi> His kindness.
Psalms 118:1 Give ye thanks to Jehovah, For good, for to the age <FI>is<Fi> His kindness.
Psalms 118:2 I pray you, let Israel say, That, to the age <FI>is<Fi> His kindness.
Psalms 118:3 I pray you, let the house of Aaron say, That, to the age <FI>is<Fi> His kindness.
Psalms 118:4 I pray you, let those fearing Jehovah say, That, to the age <FI>is<Fi> His kindness.
Psalms 118:5 From the straitness I called Jah, Jah answered me in a broad place.
The verse centers on "pray", "house", "aaron", and "kindness". It is saying that the verse draws attention to "pray" and "house", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 2's "I pray you let Israel say That..." into verse 4's "I pray you let those fearing Jehovah...", so "pray" and "house" 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 "pray" and "house" with trust shaped by these words, not by a vague optimism outside the passage.