Why does a Christian have to marry Christian?

Answer 1

This is because Muslims believe in all God prophets (including Moses, Jesus, and Muhammad) and believe in all God holy books (including Torah, The Bible, and Quran) while Christians and Jews, generally, don't believe in Muhammad as prophet and don't believe in the Quran as God holy book.

Accordingly, if Muslim woman get married with non-Muslim man he may physically prevent her from practicing her ritual worships and may prevent her children from believing in all prophets including prophet Muhammad. However, if a Muslim man marries a Christian or Jewish woman, he will not prevent her from practicing her ritual worships because he believes also in her prophet and her holy book.

Answer 2

The Apostle Paul put it like this, "do not be yoked (bound together) with an unbeliever for what fellowship does light have with darkness?"

This applies to marriage and to the business partnership.

God states right at the beginning of marriage between Adam and Eve, that when a man and a women are joined together they become one in His sight.

Also Jesus said that a house divided against itself will fall, that goes for marriage as well as business. You cant be a Christian and be married to a Catholic. The belief system is too different. One is by faith, the other by works.

Answer 3

they can. you have the total choice to. but if you do, that non-christian person might have different, even harmful views than you, thus not ending in a good marriage.