A Good Deed Never Goes Unpaid

תבלעמו ארץ: מכאן שזכו לקבורה בשכר שאמרו (לעיל ט כז) ה' הצדיק.  Why is Pharaoh worthy of meriting burial because of an insincere statement made under duress?  My great-grandfather zt"l explains that we see from here that any good thing a person does, even if it is completely insincere or done for an ulterior motive, it will still have a positive effect on the individual.  If Pharaoh said ה' הצדיק it must have aroused some feelings deep within himself that the statement carried some form of validity and it is for those feelings that he merits burial.