|Cima da Conegliano, Christ Crowned with Thorns, 15th - 16th century|
"Our dear Lord Jesus Christ was pricked with thorns. His blood went back to Heaven again, His flesh neither cankered, rankled, nor festered, neither shall thine, M. or N. In the name of the Father, Son and Holy Ghost. Amen, Amen, Amen."
[Not sure what "M. or N." meens...]