O Messenger! Proclaim the (message) which hath been sent to thee from thy Lord. If thou didst not, thou wouldst not have fulfilled and proclaimed His mission. And Allah will defend thee from men (who mean mischief), For Allah guided not those who reject Faith. (Qur'an, 005.067)
Preaching of religion or Dawah is the basic responsibility of the entire Muslim Community (Ummah). Muslims flourished everywhere till they fulfilled this duty with zeal and sincerity. When they became slack or abandoned it they lost material glory and reputation in the world. The most effective and successful solution of all challenges and problems faced by Muslims all over the world is to undertake practical work of Dawah. We should remember the plight of Muslim in Spain. They excelled in wealth, learning knowledge and trade but took no interest in preaching and Dawah. This resulted in great disaster and downfall of Muslims in Spain despite their material supremacy. If Muslims want to spend honourable life with full identification of their religion and culture and attain real prosperity they must discharge their fundamental responsibility of preaching and Dawah. The Holy Al-Qur'an, in 005.067 [Al-Maeda (The Table, The Table Spread)] says:
The proper terminology used, in Islam, for God is “Allah.” There are a number of reasons for having a special word for God. First of all, the term “Allah” means, in Arabic, the one and only universal God or Creator and Provider of the universe. Notice here I am emphasizing “the one and only.” So a Muslim would not simply say, “There is one God.” That would not be as accurate or as strong an expression as saying ‘the one and only
Allah means The One God.
The main point to be emphasized here is that, unfortunately many of the writings that are found in various libraries in the West, which are not written from a Muslim standpoint or how Muslims understand Islam, depict Allah as if He is some type of a tribal Arabian God or even the ‘God of Muslims’. For example, they’d say Mohammed worshiped his Allah. Or Muslims worship Allah. Even if they use the term Allah they put it in such a way that leaves the reader or audience with the impression that maybe it is not exactly the same God.