How does the author use foreshadowing in Blood Meridian, or the Evening Redness in the West?

Cormac foreshadows the chaos that White and his men will encounter through the words of an old man in the tavern....

"The wrath of God lies sleeping. It was hid a million years before me were and only men have the power to wake it. Hell ain't half full. Hear me. Ye carry war of a madman's making onto a foreign land. Ye'll wake more than the dogs."