Passage
Deal with thy servant according unto thy mercy, and teach me thy statutes.
Deal with thy servant according unto thy mercy, and teach me thy statutes.
Psalms 119:122 Be surety for thy servant for good: let not the proud oppress me.
Psalms 119:123 Mine eyes fail for thy salvation, and for the word of thy righteousness.
Psalms 119:124 Deal with thy servant according unto thy mercy, and teach me thy statutes.
Psalms 119:125 I am thy servant; give me understanding, that I may know thy testimonies.
Psalms 119:126 It is time for thee, LORD, to work: for they have made void thy law.
The verse centers on "mercy", "deal", "servant", "teach", and "statutes". It is saying that the verse draws attention to "mercy" and "deal", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 123's "Mine eyes fail for thy salvation and..." into verse 125's "I am thy servant give me understanding...", so "mercy" and "deal" 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 "mercy" and "deal" with trust shaped by these words, not by a vague optimism outside the passage.