O God My Strength and Fortitude Ps 18 ST. MAGNUS—Jeremiah Clark O God My Strength and Fortitude 1 O God my strength and fortitude In truth I will love thee; Thou art my castle and defence In my necessity. 2 When I, beset with pain and grief, Prayed to my God for grace; Forthwith my God heard my complaint, Out of his holy place. 3 The Lord descended from above, And bowed the heavens high, And underneath his feet he cast The darkness of the sky. 4 On cherub and on cherubim Full royally he rode;