Passage
The sum of thy word is truth, and every righteous judgment of thine is for ever.
The sum of thy word is truth, and every righteous judgment of thine is for ever.
Psalms 119:158 I beheld them that deal treacherously, and was grieved; because they kept not thy word.
Psalms 119:159 See how I have loved thy precepts: quicken me, O Jehovah, according to thy loving-kindness.
Psalms 119:160 The sum of thy word is truth, and every righteous judgment of thine is for ever.
Psalms 119:161 SHIN. Princes have persecuted me without a cause; but my heart standeth in awe of thy word.
Psalms 119:162 I have joy in thy word, as one that findeth great spoil.
The verse centers on "word", "truth", "righteous", "judgment", "thine", and "ever". It is saying that the verse draws attention to "word" and "truth", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 159's "See how I have loved thy precepts..." into verse 161's "SHIN Princes have persecuted me without a...", so "word" and "truth" 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 "word" and "truth" with trust shaped by these words, not by a vague optimism outside the passage.