May a Muslim man marry a Christian or Jewish woman?
Yes. The Holy Qur’an allows a Muslim man to marry a Christian or Jewish woman. Even so, a marriage within the same faith is better, so that children are not pulled back and forth between two directions.
The verse above is clear. A Muslim man may marry a Christian or a Jewish woman. Such a marriage is valid, and the children born from it have all their rights. In principle this holds for every marriage, even one that is not ideal from a religious point of view.
Why then the limit regarding idolaters? Jews and Christians believe, at least in name, in the one God. They understand some details differently, but at its core the home shares the same belief in God. Where idols are worshipped, however, the contrast in the home becomes so deep that peaceful life together is hardly possible.
Islam wants a marriage to be happy and to carry as little conflict as possible. So it is worth understanding the purpose of the rule, not only its letter. Children are affected most. When father and mother pull in different directions in matters of faith, children grow up as if in a tug of war.
That is why it is better to marry someone who shares the same faith and the same convictions. If, however, the wife is Christian only in name and has no objection to the children being raised in the father’s faith, there is no problem. It becomes difficult when she is firmly committed to another teaching and wants to draw the children that way.
Being allowed does not mean that no thought is needed. Anyone considering such a marriage should talk openly beforehand about how the children will be raised.