Or HaChaim on Exodus 14:6/אור החיים על שמות י״ד:ו׳

1 ואת עמו לקח עמו. "and he took his people with him. The Egyptian people had never been involved in the negotiations with Moses and Aaron. Pharaoh had to convince the Egyptians that what he was about to do had a chance to succeed as the people were greatly afraid The words לקח עמו in this context mean that "he convinced them."