1. For the Conductor, by David, a psalm. O Lord, You have probed me, and You know.
2. You know my sitting down and my standing up; You perceive my thought from afar.
3. You encircle my going about and my lying down; You are familiar with all my paths.
4. For there was not yet a word on my tongue-and behold, Lord, You knew it all.
5. You have besieged me front and back, You have laid Your hand upon me.

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.

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6. Knowledge [to escape You] is beyond me; it is exalted, I cannot know it.
7. Where can I go [to escape] Your spirit? And where can I flee from Your presence?
8. If I ascend to the heavens, You are there; if I make my bed in the grave, behold, You are there.
9. Were I to take up wings as the dawn and dwell in the furthest part of the sea,
10. there, too, Your hand would guide me; Your right hand would hold me.
11. Were I to say, "Surely the darkness will shadow me," then the night would be as light around me.
12. Even the darkness obscures nothing from You; and the night shines like the day-the darkness is as light.
13. For You created my mind; You covered me in my mother's womb.
14. I will thank You, for I was formed in an awesome and wondrous way; unfathomable are Your works, though my soul perceives much.
15. My essence was not hidden from You even while I was born in concealment, formed in the depths of the earth.
16. Your eyes beheld my raw form; all [happenings] are inscribed in Your book, even those to be formed in future days-to Him they are the same.
17. How precious are Your thoughts to me, O God! How overwhelming, [even] their beginnings!
18. Were I to count them, they would outnumber the sand, even if I were to remain awake and always with You.
19. O that You would slay the wicked, O God, and men of blood [to whom I say], "Depart from me!”
20. They exalt You for wicked schemes, Your enemies raise [You] for falsehood.
21. Indeed, I hate those who hate You, Lord; I contend with those who rise up against You.
22. I hate them with the utmost hatred; I regard them as my own enemies.
23. Search me, Lord, and know my heart; test me and know my thoughts.
24. See if there is a vexing way in me, then lead me in the way of the world.