﴿ قَالَ كَذَٰلِكِ قَالَ رَبُّكِ هُوَ عَلَىَّ هَيِّنٌۭ ۖ وَلِنَجْعَلَهُۥٓ ءَايَةًۭ لِّلنَّاسِ وَرَحْمَةًۭ مِّنَّا ۚ وَكَانَ أَمْرًۭا مَّقْضِيًّۭا ﴾

“[The angel] answered: "Thus it is; [but] thy Sustainer says, `This is easy for Me; and [thou shalt have a son,] so that We might make him a symbol unto mankind and an act of grace from US. And it was a thing decreed [by God]:”

لِأَهَبَ لَكِ غُلَامًا (to give you a boy - 19:19) Here Sayyidna Jibra'n (علیہ السلام) had attributed to himself the gift of the child because Allah Ta’ ala had sent him in order that he should breathe into her collar, and this breath would be the means of her conceiving the child, whereas in reality this gift was by the act of Allah.