Take another look at the tapestry. Maybe the MIB becomes the Eye of Horus if he reaches home (the temple). We know the MIB doesn't like freewill, maybe his end game is getting to the temple were he can mind control everyone so that it doesn't end in destruction. Jacob believes in mankind. MIB has a "Terminator" "Matrix" view. He is not evil, but thinks in order for humans to survive he must mind control them. Thought??