3. The Son of Mary
The fourth title of Christ in this verse is "the Son of Mary" which is, in fact, a name of shyness. His father's name was unknown; therefore, he was called by reference to his mother. The Qur'an justifies the Virgin Mary several times and testifies that the birth of her Son was completed with Allah's satisfaction and pleasure, as Christ testifies in the Qur'an:
"Peace is upon Me, the day I was born, and the day I will die, and the day I am raised up alive!" (Sura Maryam 19:33)
وَالسَّلاَمُ عَلَيَّ يَوْمَ وُلِدْتُ وَيَوْمَ أَمُوتُ وَيَوْمَ أُبْعَثُ حَيّاً. (سُورَة مَرْيَم ١٩ : ٣٣)
There was divine peace upon Mary and her son from His birth until His resurrection. In addition, the Qur'an testifies twice that no man had touched Mary, neither had she been unchaste. Yet, Allah breathed into her His Spirit, for she had kept her virginity. Christ has no earthly father, but the holy God laid His Word and His Spirit in the Virgin Mary.
From this fact we also have the right to call the Son of Mary a Son by the Spirit of Allah, or a "spiritual" Son of Allah, taking into consideration that no intercourse had taken place. Any physical encounter remains unthinkable. Since this term could hardly be accepted by the Semites, the Qur'an calls Him "the Son of Mary". However, the Holy Spirit preserved His life, death, and resurrection in the peace of Allah. The Son of Mary also wants to qualify us with and share with us His own right of spiritual Sonship, and sanctify us for our adoption by Allah, if we open our souls to the spirit of His holy love.