The Kitáb-i-Aqdas - The Most Holy Book
Index term: in Bahá’í­ laws, under Justice
k56.
The penalties for wounding or striking a person depend upon the severity of the injury; for each degree the Lord of Judgement hath prescribed a certain indemnity. He is, in truth, the Ordainer, the Mighty, the Most Exalted. We shall, if it be Our Will, set forth these payments in their just degrees -- this is a promise on Our part, and He, verily, is the Keeper of His pledge, the Knower of all things.
k63.
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. And he who would take into his service a maid may do so with propriety. Such is the ordinance which, in truth and justice, hath been recorded by the Pen of Revelation. Enter into wedlock, O people, that ye may bring forth one who will make mention of Me amid My servants. This is My bidding unto you; hold fast to it as an assistance to yourselves.
k70.
Should a woman be divorced in consequence of a proven act of infidelity, she shall receive no maintenance during her period of waiting. Thus hath the day-star of Our commandment shone forth resplendent from the firmament of justice. Truly, the Lord loveth union and harmony and abhorreth separation and divorce. Live ye one with another, O people, in radiance and joy. By My life! All that are on earth shall pass away, while good deeds alone shall endure; to the truth of My words God doth Himself bear witness. Compose your differences, O My servants; then heed ye the admonition of Our Pen of Glory and follow not the arrogant and wayward.
k72.
It is forbidden you to trade in slaves, be they men or women. It is not for him who is himself a servant to buy another of God’s servants, and this hath been prohibited in His Holy Tablet. Thus, by His mercy, hath the commandment been recorded by the Pen of justice. Let no man exalt himself above another; all are but bondslaves before the Lord, and all exemplify the truth that there is none other God but Him. He, verily, is the All-Wise, Whose wisdom encompasseth all things.
n86.
Should anyone intentionally destroy a house by fire, him also shall ye burn; should anyone deliberately take another’s life, him also shall ye put to death.
The law of Bahá’u’lláh prescribes the death penalty for murder and arson, with the alternative of life imprisonment (see note 87).
In His Tablets ‘Abdu’l-Bahá explains the difference between revenge and punishment. He affirms that individuals do not have the right to take revenge, that revenge is despised in the eyes of God, and that the motive for punishment is not vengeance, but the imposition of a penalty for the committed offence. In Some Answered Questions, He confirms that it is the right of society to impose punishments on criminals for the purpose of protecting its members and defending its existence.
With regard to this provision, Shoghi Effendi in a letter written on his behalf gives the following explanation:

In the Aqdas Bahá’u’lláh has given death as the penalty for murder. However, He has permitted life imprisonment as an alternative. Both practices would be in accordance with His Laws. Some of us may not be able to grasp the wisdom of this when it disagrees with our own limited vision; but we must accept it, knowing His Wisdom, His Mercy and His Justice are perfect and for the salvation of the entire world. If a man were falsely condemned to die, can we not believe Almighty God would compensate him a thousandfold, in the next world, for this human injustice? You cannot give up a salutary law just because on rare occasions the innocent may be punished.

The details of the Bahá’í­ law of punishment for murder and arson, a law designed for a future state of society, were not specified by Bahá’u’lláh. The various details of the law, such as degrees of offence, whether extenuating circumstances are to be taken into account, and which of the two prescribed punishments is to be the norm are left to the Universal House of Justice to decide in light of prevailing conditions when the law is to be in operation. The manner in which the punishment is to be carried out is also left to the Universal House of Justice to decide.
In relation to arson, this depends on what “house” is burned. There is obviously a tremendous difference in the degree of offence between the person who burns down an empty warehouse and one who sets fire to a school full of children.
n89.
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.
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”. ‘Abdu’l-Bahá, the authorized Interpreter of the Bahá’í­ Writings, states that in the text of the Aqdas monogamy is in effect enjoined. He elaborates this theme in a number of Tablets, including the following:

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.

Polygamy is a very ancient practice among the majority of humanity. The introduction of monogamy has been only gradually accomplished by the Manifestations of God. Jesus, for example, did not prohibit polygamy, but abolished divorce except in the case of fornication; Muhammad limited the number of wives to four, but making plurality of wives contingent on justice, and reintroducing permission for divorce; Bahá’u’lláh, Who was revealing His Teachings in the milieu of a Muslim society, introduced the question of monogamy gradually in accordance with the principles of wisdom and the progressive unfoldment of His purpose. The fact that He left His followers with an infallible Interpreter of His Writings enabled Him to outwardly permit two wives in the Kitáb-i-Aqdas but uphold a condition that enabled ‘Abdu’l-Bahá to elucidate later that the intention of the law was to enforce monogamy.