Passage
The sum of thy word is truth; And every one of thy righteous ordinances [endureth] for ever. SHIN.
The sum of thy word is truth; And every one of thy righteous ordinances [endureth] for ever. SHIN.
Psalms 119:158 I beheld the treacherous, and was grieved, Because they observe not thy word.
Psalms 119:159 Consider how I love thy precepts: Quicken me, O Jehovah, according to thy lovingkindness.
Psalms 119:160 The sum of thy word is truth; And every one of thy righteous ordinances [endureth] for ever. SHIN.
Psalms 119:161 Princes have persecuted me without a cause; But my heart standeth in awe of thy words.
Psalms 119:162 I rejoice at thy word, As one that findeth great spoil.
The verse centers on "word", "truth", "righteous", "ordinances", "endureth", "ever", and "shin". 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 "Consider how I love thy precepts Quicken..." into verse 161's "Princes have persecuted me without a cause...", 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.