1. A psalm by David, when he fled from Absalom his son.
2. Lord, how numerous are my oppressors; many rise up against me!
3. Many say of my soul, “There is no salvation for him from God—ever!”
4. But You, Lord, are a shield for me, my glory, the One Who raises my head.
5. With my voice I call to the Lord, and He answers me from His holy mountain, Selah.

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. I lie down and sleep; I awake, for the Lord sustains me.
7. I do not fear the myriads of people that have aligned themselves all around me.
8. Arise, O Lord, deliver me, my God. For You struck all my enemies on the cheek, You smashed the teeth of the wicked.
9. Deliverance is the Lord’s; may Your blessing be upon Your people forever