﴿ قَالَ رَبِّ أَنَّىٰ يَكُونُ لِى غُلَٰمٌۭ وَقَدْ بَلَغَنِىَ ٱلْكِبَرُ وَٱمْرَأَتِى عَاقِرٌۭ ۖ قَالَ كَذَٰلِكَ ٱللَّهُ يَفْعَلُ مَا يَشَآءُ ﴾

“[Zachariah] exclaimed: "O my Sustainer! How can I have a son when old age has already overtaken me, and my wife is barren?" Answered [the angel]: "Thus it is: God does what He wills."”

Please check ayah 3:41 for complete tafsir.