In this essay, Ralph C. Wood's religious-philosophical interpretation of LotR has been analyzed, with emphasis upon his conclusions about evil and sin in LotR. Some of Wood's claims about evil and sin in LotR have been applied upon the character Boromir, in order to show how sin is manifested as truth-transgression, pride, avarice, and misdirected love. A theoretical section is presented in order to define the concepts of sin, mimetic desire, and evil. The literary analysis focuses upon the character Boromir; the relevant works of literary scholas Ralph C. Wood and René Girard have been chosen as points of reference in this analysis. Attention is also given to an article by the historian Stephen Morillo, in the analysis of Norse pagan and Christian interpretations. It has been argued that a Christian reading of LotR, contrary to Morillo's standpoint, is possible.