glue

And John who had never at any time seen his own face said to him: Thou mockest me, child: am I like that in form, <excelling> thy Lord? how canst thou persuade me that the portrait is like me? And Lycomedes brought him a mirror. And when he had seen himself in the mirror and looked earnestly at the portrait, he said: As the Lord Jesus Christ liveth, the portrait is like me: yet not like me, child, but like my fleshly image; for if this painter, who hath imitated this my face, desireth to draw me in a portrait, he will be at a loss, the colours that are now given to thee, and boards and plaster and glue, and the position of my shape, and old age and youth and all things that are seen with the eye.