Passage
Thy faithfulness is unto all generations: thou hast established the earth, and it abideth.
Thy faithfulness is unto all generations: thou hast established the earth, and it abideth.
Psalms 119:88 Quicken me after thy lovingkindness; so shall I keep the testimony of thy mouth.
Psalms 119:89 For ever, O LORD, thy word is settled in heaven.
Psalms 119:90 Thy faithfulness is unto all generations: thou hast established the earth, and it abideth.
Psalms 119:91 They continue this day according to thine ordinances: for all are thy servants.
Psalms 119:92 Unless thy law had been my delights, I should then have perished in mine affliction.
The verse centers on "faith", "faithfulness", "generations", "thou", "hast", "established", "earth", and "abideth". It is saying that the verse draws attention to "faith" and "faithfulness", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 89's "For ever O LORD thy word is..." into verse 91's "They continue this day according to thine...", so "faith" and "faithfulness" 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 "faith" and "faithfulness" with trust shaped by these words, not by a vague optimism outside the passage.