Kabbalah Mazmur 149:6: Ohr Ne'erav & Sha'arei Kedusha

Does not wisdom cry out (Prov. 8:1) to the remnants of Israel to observe discretion (Prov. 2:11) [regarding] the secrets of wisdom (Job 11:6)? They praise the Lord with their throats (Ps. 149:6). In their right hand is fullness of joy (Ps. 16:11) and pleasantness. They direct their tongue with the pen of a ready writer (Ps. 45:2) who has studied and understood. He is frightened by the fools among the people. They walk in darkness, refined in the smelter of poverty and much servitude (Lam. 1:3) bordered with cords (Esther 1:6) of mockery, folly, and ignorance in the captivity of this host (Obad. 1:20) when vileness is exalted among the sons of men (Ps. 12:9). They are ignorant of the time to plant the tree of life in the midst of the garden (Gen. 2:9)

Reciting the Shema upon retiring to sleep: Know what our sages, of blessed memory, stated,⁷²⁵Zohar III 212a-b “One who recites the Shema upon his bed kills myriads of destructive forces found at night, particularly when his soul ascends above. This is as stated,⁷²⁶Psalms 149:5-6 ‘Let the pious (Chassidim) exalt in glory, let them sing joyously upon their beds. The praises of exaltation of God are in their throats, and a double-edged sword is in their hand.’”