يُدْخِلُ مَن يَشَآءُ فِى رَحْمَتِهِۦ ۚ وَٱلظَّـٰلِمِينَ أَعَدَّ لَهُمْ عَذَابًا أَلِيمًۢا Qur’an Al-Insan (76:31)Yudkhilu man yash a o fee ra h matihi wa al thth a limeena aAAadda lahum AAa tha ban aleem a n
Or: "whomever He wills" - either of these two formulations being syntactically justified.
That is according to His just and wise Plan. If the will is right, it obtains Allah's Grace and Mercy. If the will of man rejects Allah, man must suffer the Penalty.