وَلِنَجْعَلَهُ ءَايَةً لِّلْنَّاسِ
(And (We wish) to appoint him as a sign to mankind) (19:21): i.e., proof for them of His power, for He created people in four different ways. Adam, peace be upon him, was created from clay, from neither a male nor a female. Hawwa', peace be upon her, was created from a male without a female. All other people, besides `Isa, peace be upon him, were created from male and female, and this sign of Allah was completed with the creation of `Isa bin Maryam, may peace be upon them both, who was created from a female without a male. Allah says: