[Click here to listen to a great sermon by Timothy Keller on this subject!] I say to you, everyone who looks at a woman lustfully has already committed adultery with her in his heart. [Matt 5:28] Lust, in its narrow definition as related to sexual desire, can get a lot of attention, in teaching about the moral life.  Rightly, we’ve left it to the last in this series!  When Dorothy Sayers decided to write on the…