From Association of Independent Readers and Rootworkers
Hoodoo psychic readers, spirit workers and root doctors who recite Psalms on behalf of clients may work with Psalm 15 in
altar work and prayers against evil spirits and devils. If a client is plagued by such spirits, the root doctor may employ this Psalms in creating a cleansing wash that is then used to exorcise and remove the devils. Psalm 15 is also employed by root doctors on behalf of clients to help them gain the favor of all. This Psalm is employed to fortify a client so that they may succeed in all that they do. This Psalm is also employed to stave off depression and bring peace of mind.
A Psalm of David.
 LORD, who shall abide in thy tabernacle? who shall dwell in thy holy hill?
 He that walketh uprightly, and worketh righteousness, and speaketh the truth in his heart.
 He that backbiteth not with his tongue, nor doeth evil to his neighbour, nor taketh up a reproach against his neighbour.
 In whose eyes a vile person is contemned; but he honoureth them that fear the LORD. He that sweareth to his own hurt, and changeth not.
 He that putteth not out his money to usury, nor taketh reward against the innocent. He that doeth these things shall never be moved.