What are the lessons we can learn from the creation of عيسى (Jesus) PBUH?

The Jews were people of faith and clinged to a strict hereditary practices of marriage based on strict constrained sexual contract. They have achieved pinnacle status in doing so to the point of the adoption of مريم (Maryam/Marry) AS in their محراب (mi7rab/sanctuary/monastary) in order to preserve the status of sexual purity (احصان الفرج). Yet Allah SWT showed the world a different path in the meaning of life by introducing عيسى 3eesa/Jesus to the world without the need of a fatherly figure to balance the motherly figure of Maryam AS. Why would Allah SWT do such thing? What is the message? Why was Maryam accused of بغاء Bigha or بغيا Baghiyya, and what was Allah SWT answer to this accusation?