Thematic Bible: Spirit of, explained

Is not this the fast which I have chosen: to loose the bands of wickedness, to undo the thongs of the yoke, and to send forth free the crushed, and that ye break every yoke? Is it not to deal thy bread to the hungry, and that thou bring to thy house the needy wanderers; when thou seest the naked, that thou cover him; and that thou hide not thyself from thine own flesh?