Simplify the following text for a Grade 11 native English-speaking person.
Original: According to the Book of Exodus , Moses was born in a time when his people , the Children of Israel , were increasing in number and the Egyptian Pharaoh was worried that they might help Egypt 's enemies .
Simplified: According to the Book of Exodus , Moses was born in a time when his people were increasing in number and the Egyptian Pharaoh was worried that they might help Egypt 's enemies .