Psalms (Author Moses, David, Solomon, Asaph, Heman, Ethan, sons of Korah, compiled by Ezra)
Chapter 43
5Why art thou cast down, my soul? and why art thou disquieted within me? hope in God; for I shall yet praise him, who is the health of my countenance, and my God.
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.