Although both Arabic and English are languages with rich vocabularies and varied modes of expression, their forms differ widely from one another. The Arabic of the Kitáb-i-Aqdas is marked by intense concentration and terseness of expression. It is a characteristic of this style that if a connotation is obvious it should not be explicitly stated. This presents a problem for a reader whose cultural, religious and literary background is entirely different from that of Arabic. A literal translation of a passage which is clear in the Arabic could be obscure in English. It therefore becomes necessary to include in the English translation of such passages that element of the Arabic sentence which is obviously implicit in the original. At the same time, it is vital to avoid extrapolating this process to the point where it would add unjustifiably to the original or limit its meaning. Striking the right balance between beauty and clarity of expression on the one hand, and literalness on the other, is one of the major issues with which the translators have had to grapple and which has caused repeated reconsideration of the rendering of certain passages. Another major issue is the legal implication of certain Arabic terms which have a range of meanings different from those of similar terms in English.

Sacred Scripture clearly requires especial care and faithfulness in translation. This is supremely important in the case of a Book of Laws, where it is vital that the reader not be misled or drawn into fruitless disputation. As had been foreseen, the translation of the Most Holy Book has been a work of the utmost difficulty, requiring consultation with experts in many lands. Since some one third of the text had already been translated by Shoghi Effendi, it was necessary to strive for three qualities in the translation of the remaining passages: accuracy of meaning, beauty of English, and conformity of style with that used by Shoghi Effendi.