Fragment (of a Shroud?) with Inscription

This fragment, which possibly was part of a shroud, has wide horizontal bands of birds and fish alternating with narrow double bands of inscription. The text reads in both orthograde and retrograde: "Oh Lord! Even though my sins may be very great, I know that Thy forgiveness is greater." Bands are alternately blue and tan with design in white. A portion of selvage is preserved at right and a starting edge at bottom.