Hello ProudMuslim, and welcome to the Baha'i Faith forum!
I'll give your questions a shot as well.
- Can a Bahai marry an agnostic or athiest?
Yes. One member of our local community is actually married to an agnostic.
- Can the children of mixed marriage be raised as non-Bahai?
I suppose, and I'm sure it's happened before. But with most of the mixed couples that I've ever been acquainted with, the Baha'i spouse always tries to instill some Baha'i teachings into the child's education. Nothing wrong with a little "elimination of all forms of prejudice" and "unity of mankind" as far as I'm concerned!
- Does Bahai encourage propagation?
Oh yes. I believe there is a quote in our Writings which states that the greatest thing a Baha'i can do in this day and age is to teach the Faith. The act of teaching has even been put on the same level as martyrdom in days past.
- Is there any given reason why polygamy is not permitted?
I'm going to have to get slightly historical on you but I feel it will illustrate the answer you're looking for in the most clear method possible, so please bear with me.
In verse 63 of our book of laws, the Kitab-i-Aqdas, Baha'u'llah (founder of the Baha'i Faith) states the following:
God hath prescribed matrimony unto you. Beware that ye take not unto yourselves more wives than two. Whoso contenteth himself with a single partner from among the maidservants of God, both he and she shall live in tranquillity.
In that quote, it appears that Baha'u'llah is condoning bigamy. This was likely done to make the transition from Islam to the Baha'i Faith easier for the early Persian believers. But in the endnotes of the Kitab-i-Aqdas, the following is stated:
While the text of the Kitáb-i-Aqdas appears to permit bigamy, Bahá’u’lláh counsels that tranquillity and contentment derive from monogamy. In another Tablet, He underlines the importance of the individual’s acting in such a way as to “bring comfort to himself and to his partner”. [Emphasis mine]
We can then infer that comfort and tranquillity should be essential to matrimony. This is why `Abdu'l-Baha, Baha'u'llah's son and authorized interpreter of his words, has stated the following regarding polygamy in the Faith:
Know thou that polygamy is not permitted under the law of God, for contentment with one wife hath been clearly stipulated. Taking a second wife is made dependent upon equity and justice being upheld between the two wives, under all conditions. However, observance of justice and equity towards two wives is utterly impossible. The fact that bigamy has been made dependent upon an impossible condition is clear proof of its absolute prohibition. Therefore it is not permissible for a man to have more than one wife.
So in the end, polygamy is really
forbidden because a man could not possibly love multiple wives equally, and this is bound to increase tension and disrupt tranquility in potential relationships.
Sorry if that last bit might have confused you. Please don't hesitate to ask more questions!