Moses did well delegating to others. Aaron, his brother, served often as his mouthpiece, compensating for Moses' speech impediment. An orator, he wasn't. Miriam, his sister, also assisted Moses in ...

On another, midrashic level, his voice was far too fluid for Moses — Jeff Goldblum, who played his brother, Aaron, with his trademark speech hesitations would seem like the better candidate.

After crossing the Red Sea—miraculously—Israel travels to Mount Sinai, where they will meet God and receive the Law of Moses.