Faulkner comments heavily in this story on the conflict and contrast between the Native American ways and the "progressive" ways of modern American. Ike holds onto his Native American ancestry, but Faulkner here is - somewhat sarcastically - reassuring his readers that Ike is a worthy hero because he has met the standards of the Judeo-Christian American society.
Baptized in blood, educated in the forest, to be properly prepared for his subsequent life.
Ike is not native american. He is full white. I got this line from a critic's review and I am trying to understand it.