(10,13)1. It took 24hrs for the locust to come. Why? We don't find it took any time at all for the Tzifardae'ah or Arov to come? (Wouldn't Pharaoh lose "faith" in Moshe when it looked like he was trying all day to preform his magic and he just couldn't quite get the hang of it? By nightfall or later Pharaoh would have laughed him off and definitely not listened to Moshe in the future.) ?