1. For the Conductor, by the sons of Korach, a maskil.1
2. God, with our ears we have heard, our fathers have told us, of the deeds You wrought in their days, in the days of old.
3. You drove out nations with Your hand, and planted [Israel in their place]; You afflicted peoples and banished them.
4. For not by their sword did they inherit the land, and their own arm did not save them, but by Your right hand, Your arm and the light of Your countenance-for You favored them.
5. You are my king, O God; decree the salvation of Jacob.

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. Through You will we gore our adversaries; with Your Name we will trample our opponents.
7. For I do not trust in my bow, and my sword cannot save me.
8. For You have delivered us from our foes, and You shamed those who hate us.
9. In God we glory all day, and forever thank Your Name, Selah.
10. Though You abandon and disgrace us, and do not go forth with our armies;
11. You cause us to retreat from the oppressor, and those who hate us plunder for themselves;
12. You deliver us like sheep to be devoured, and scatter us among the nations;
13. You sell Your nation without gain, and do not set a high price upon them;
14. You make us a disgrace to our neighbors, the scorn and derision of those around us;
15. You make us a byword among the nations, [a cause for] nodding the head among the peoples;
16. all day long my humiliation is before me, and the shame of my face covers me
17. at the voice of the reviler and blasphemer, because of the foe and avenger-
18. all this has come upon us, yet we have not forgotten You, nor have we been false to Your covenant.
19. Our hearts have not retracted, nor have our steps strayed from Your path.
20. Even when You crushed us in the place of serpents, and shrouded us in the shadow of death-
21. did we forget the Name of our God, and extend our hands to a foreign god?
22. Is it not so that God can examine this, for He knows the secrets of the heart.
23. For it is for Your sake that we are killed all the time; we are regarded as sheep for the slaughter.
24. Arise! Why do You sleep, my Lord? Wake up! Do not abandon [us] forever!
25. Why do You conceal Your countenance and forget our affliction and distress?
26. For our souls are bowed to the dust, our bellies cleave to the earth.
27. Arise! Be our help, and redeem us for the sake of Your kindness.