فَاتَّخَذَتْ مِن دُونِهِمْ حِجَابًاShe placed a screen before them;This means that she hid herself from them and concealed herself.فَأَرْسَلْنَا إِلَيْهَا رُوحَنَاthen We sent to her Our Ruh,Then, Allah sent Jibril to her.فَتَمَثَّلَ لَهَا بَشَرًا سَوِيًّاand he appeared before her in the form of a man in all respects.This means that he came to her in the form of a perfect and complete man.Mujahid, Ad-Dahhak, Qatadah, Ibn Jurayj, Wahb bin Munabbih and As-Suddi all commented on Allah's statement, فَأَرْسَلْنَا إِلَيْهَا رُوحَنَا (then We sent to her Our Ruh),"It means Jibril."قَالَتْ إِنِّي أَعُوذُ بِالرَّحْمَن مِنكَ إِن كُنتَ تَقِيًّا