The Mark Of Cain

Poul Anderson's fiction addresses religious beliefs and theological issues but how often does it use specifically Biblical images or symbols? I ask this because the mark of Cain is seen in works by two authors whom we compare with Anderson: Neil Gaiman and John C. Wright. In Wright's The Golden Age, the mark is:

"...a ghastly triple scar burned into his forehead." (p. 72)

In Gaiman's The Sandman: Season Of Mists, Morpheus, communicating formally with the Lord of Hell, sends the only messenger whom Lucifer will not harm. Lucifer pulls back the hair from Cain's forehead, revealing for the only time - a branded circle.

So there is plenty of scope for authors of imaginative fiction to revisit the familiar Biblical landscape. Cain's mark with all its implications is one of many details.

Addendum: I should have referenced Anderson's many Biblical quotations. See here. Nevertheless, what I meant was not quotes inside inverted commas but allusions embedded in Anderson's texts. This might lead to another post.