William Combs, in his new book, Who Told You That You Were Naked?, believes this self-image is tied to the beginning of man after the fall. The author believes that the reason the first couple, after eating of the fruit of knowledge of good and evil, did what they did (covering themselves) was because:
"They became aware of the merits of their individual differences, the most obvious being the characteristics that distinguished them as male and female. While those diﬀerences were there all along, they now compared their own uniqueness with those of the other person in light of their newly acquired understanding. In making this evaluation, each must have concluded their own diﬀerences were not as good as those of their spouse...
"The devastating repercussions of these subjective assessments created feelings of personal embarrassment, shame, and a growing conviction their nakedness was no longer acceptable to the other person."
"Although Adam admitted he ate the fruit, he asserted he acted because the woman God gave him had urged him to do so. By accusing his wife—and also portraying the Lord as partially culpable—he revealed just how threatened and insecure he was and how much his opinion of the Lord’s motives had changed. In Adam’s eyes, God’s intentions were no longer those of a person who could be trusted and who loved him and sought to restore his self-image."You can find this insight and many more in William Comb's Who Told You That You Were Naked?.
Many thanks to Carpenter's Son Publishing for review copy.