After the Egyptians freed B'nei Yisrael from bondage, they regretted giving up their slaves and pursued after them. Yet, in light of the ten awesome plagues they had already endured, why did the Egyptians think they could successfully recapture the Nation of Israel? Wouldn't HaShem rescue His people?

The Egyptians erroneously assumed that the power of HaShem is restricted to acts of destruction, as demonstrated by the plagues. That is, they thought the He destroys but does not perform acts of deliverance. Therefore, they reasoned that if they attack Israel, HaShem could not save them.  

As flawed as this thinking is, it reflects a common