For few verses in the Bible is the relationship between scripture and the artistic imagination more intriguing than for the conclusion of Genesis 4:15: "And the Lord set a mark upon Cain, that whosoever found him should not kill him."
What was the mark of Cain? The answers set before us in this sensitive study by art historian Ruth Mellinkoff are sometimes poignant, frequently surprising. An early summary of rabbinic answers, for examples...