"and on the seventh year he shall go out to freedom": What is the intent of this? From (Devarim 15:13) "And when you send him away, etc." I might think that he must write him a writ of emancipation; it is, therefore, written "he shall go out to freedom." Or I might think that he (the servant) must indemnify him; it is, therefore, written "he shall go out to freedom, gratis."