1. A song of ascents. Much have they persecuted me from my youth on. Let Israel declare it now-
2. "Much have they persecuted me from my youth on, [but] they have not prevailed against me.”
3. The plowmen plowed upon my back; they wished to make their furrow long.
4. But the Lord is just; He cut the cords of the lawless.
5. They will be humiliated and will be turned back, all the haters of Zion.

Tehillim Ohel Yoseph Yitzchok (Kehot Publication Society)

Tehillim is recited by Jewish people collectively and individually, as the desire occurs to offer praise and thanksgiving to G-d; or alternitavely, in times of crisis and need, as a form of supplication, and even as a venue to express regret for sin.

6. They will be as grass upon the rooftops that withers before one plucks it,
7. wherewith the reaper has never filled his hand, nor the sheaf-binder his arm;
8. and of which the passers-by never have said: "The blessing of the Lord be upon you; we bless you in the name of the Lord."