An evil desire is meant. In other words: you are the one whom sin attacks as does a wild animal.3 Now the Lord continued with the words: “but you must master it.” Here too the true meaning hinges on the absence of faith in Cain. The Lord was not telling him to do the impossible, to master sin by his own strength. Rather, he was calling on Cain to repent and turn to him in humble trust. Then the Lord through his word would give him the strength to resist and overcome the anger against God and the