Maryam • EN-TAFSIR-MAARIF-UL-QURAN
﴿ قَالَ كَذَٰلِكَ قَالَ رَبُّكَ هُوَ عَلَىَّ هَيِّنٌۭ وَقَدْ خَلَقْتُكَ مِن قَبْلُ وَلَمْ تَكُ شَيْـًۭٔا ﴾
“Answered [the angel]: "Thus. it is; [but] thy 'Sustainer says, `This is easy for Me -even as I have created thee aforetime out of nothing.”
The word عِتِيًّا is derived from which actually means 'unresponsive' or 'insensitive', and in the present context it means dryness of the bones.