Arcana Coelestia # 7103
7103. 'And the king of Egypt said to them' means the reply from those steeped in falsities. This is clear from the meaning of 'saying', when Pharaoh is speaking to Moses and Aaron, as thinking that was of a contrary nature, as above in 7094, thus the thinking contained in the reply; and from the representation of Pharaoh or 'the king of Egypt' as false factual knowledge, dealt with in 6651, 6679, 6683, 6692, thus those who are steeped in falsities.
Child
A child is a young boy or girl in the care of parents, older than a suckling or an infant, but not yet an adolescent. "Children" are sometimes used as a name for a large group of descendants of one person, such as the Children of Israel, or even all human beings as the Children of Men. A child represents innocence and charity, where innocence is the willingness to be led, and charity is love. This is why Jesus blessed them and suggested that we all become like children in order to enter heaven.