The Midrash explains that there were 4 different responses Bnei Yisroel had when faced with Pharos army:
- Retreat to Egypt.
- Give up and die.
- Jump in the water and swim to safety.
- Fight back.
All these responses were wrong. So often we are faced with challenges, difficulties, anxieties. We plan for every eventuality and contingency. Yet, we leave Hashem out of the equation. It is to Hashem, and only Hashem, we are supposed to turn to in times of distress, everything else is merely our Hishtadlut or a messenger from him.