If the God did not have wife, then how can we be his sons or daughters.
Here is a short debate between a priest and a Muslim
Priest: Our Jesus is better than your Mohammed.
Muslim: Why you say like this?
Priest: Because Jesus did not marry and Mohammed Married.
Muslim: Why? Is marriage something dirty?
Priest: Yes Marriage is dirty.
Muslim: Are you married?
Priest: No.
Muslim: But your Belief says that God married Merium and Jesus was born right?
Priest: Yes that is our belief.
Muslim: Then this would say that God did something dirty, are you better than God? Are you better than God?
The priest shut up with no answer

People who do not want to believe would not believe what ever is done to them or what ever sign they see.
None believers will only believe when God wells.
We as Muslims should not force them.
Finally the Quran came for all the people on this earth.