ACCORDING TO LANGUAGE
The science of kalam comes from the word kalam which means conversation.
ACCORDING TO TERMS
It is a scientific study that is able to understand religious beliefs with, based on strong arguments.
ACCORDING TO THE OPINIONS OF SOME MEMBERS
1. Imam al-Ghajali
Knowledge whose aim is to maintain the purity of the beliefs of the Ahlu Sunnah and protect them from the suggestions of experts in heresy.
2. Ibn Khaldun
Science that contains various arguments about creeds which are strengthened by the propositions of creeds with the aim of rejecting ahlul bid`ah who i`tikadiyah deviate from the creeds of Salaf scholars and the sunnah.
3. Al-Farabi
Science that discusses the substance and nature of God along with the existence of everything related to world problems until after death based on final dakhtin.
4Muhammad Abduh
The knowledge that discusses the existence of God, the attributes that are obligatory for him and the attributes that are impossible for him to have, also discusses about the Messenger of God to establish the truth of his message, what is obligatory on him, the things that are important to them, and things - forbidden things are connected to themselves.
Source: bergunaxp