They also suggest, basing their claim on a hadith narrated by Ibn `Abbas, that Prophet 'Isa (as) was raised to Allah's presence in his early 30s, that he will experience his old age by living for another 40 years after his second coming, and that the above verse is proof for this miraculous event.14
The Qur'an uses this expression only in regard to Prophet 'Isa (as) because all of the other Prophets that we know about fulfilled their responsibility of calling their people to belief after they had already reached a mature age. In the case of Prophet 'Isa (as), however, it points out a miraculous situation, because the expressions in the cradle and when fully grown highlight the two miraculous times.
At-Tabari, in his work The Commentary of at-Tabari, explains these expressions in the following terms:
These statements [Surat al-Ma'ida 110] indicate that in order to complete his lifespan and speak to people when fully grown, 'Isa will come down from Heaven. That is because he was raised to Heaven when still young. This verse [Surah Al 'Imran 46] provides evidence that 'Isa is living. The Ahl al-Sunnah share this view, because this verse states that he will speak to people when fully grown. He will be able to grow fully only when he returns to Earth from Heaven.15
The interpretations of kahlaan, like all the other information about Prophet 'Isa (as), indicate his miraculous return to Earth in the End Times as well as his efforts to direct people toward true religion. No doubt, this is great news for all believers, a gift and grace from Allah. Thus, believers are responsible for supporting and defending Prophet 'Isa (as) after his second coming in the most appropriate manner and to live by the Qur'an's morality.