Read Exodus 14:31 Using Other Translations
And Israel saw that great work which the LORD did upon the Egyptians: and the people feared the LORD, and believed the LORD, and his servant Moses.
Israel saw the great power that the LORD used against the Egyptians, so the people feared the LORD, and they believed in the LORD and in his servant Moses.
When the people of Israel saw the mighty power that the LORD had unleashed against the Egyptians, they were filled with awe before him. They put their faith in the LORD and in his servant Moses.