From the islamic point of view it is allowed for a MUSLIM to marry 4 wifes (Q.4 V2). This depend on some conditions which includes i- segxwal desire ii-ability to establish justice among the wifes; iii- Capability to cater for them.
From the Chistianity point of view i need reasons to prove his action right or wrong. But we should avoid judging with common sence. |