No attribute of oppression can be associated with Him...
No attribute of oppression can be associated with Him because He is free from every fault. If you look around the whole universe, you will see every thing is dependent upon adl. Allah has given every particle a particular place. If a single particle changes its place slightly, then the whole system of the universe will be destroyed. The foundation of beliefs and acts is also adl.
If you lower the status of Muhammad (saw) wa Aal e Muhammad (as) and give others a higher status than Them, this is the true zulm (oppression). If someone claims to be Shia and still does these acts, then in reality he is destroying the Shia religion. Nabuwiat (prophet hood) Allah wants to send ever lasting blessings upon His creation, but adl demands only those who prove to be deserving of such blessings will receive them.
One who does not deserve cannot receive such blessings because it goes against adl. When one becomes deserving of the blessings of Allah, only then will he fulfill his purpose of creation. That is the love and marifat (recognition) of Ahlul Bayt (as). It is compulsory to consistently inform the whole of humanity what is their purpose of creation. In this way, they will not have any excuse. Allah Himself cannot come to the creation. Therefore He created representatives.
As His representatives, They convey His message to His creation. This process is called nabuwiat (prophet hood), and the representatives are called prophets. We are the nation of Hz Muhammad Mustafa (saw) bin Abdullah (as) bin Hz Abdul Muttalib (as). Description of Nabuwiat (prophet hood) Naba is an Arabic word meaning "news . The word "nabi is derived from naba. A prophet is one who receives messages from Allah and then conveys those messages to the creation.
Unless you understand naba, you cannot understand nabuwiat. What is naba? The explanation of this word can be found in Quran, Sura Naba ayah 1-3: Of what do they ask one another? About the great news, about which they differ?" In Usool e Kafi, Imam Jafar Sadiq (as) said, "That great news is wilayat of Ameerul Momineen (as)." Imam Muhammad Baqir (as) said, " This ayah was revealed for Ameerul Momineen (as). Ameerul Momineen (as) use to say,"No ayah of Allah is greater than Me.
No news is greater than Me." In or der to explain this in clearer terms, we will mention a few hadiths . From these hadiths, you will be able to see the purpose of establishing the process of prophet hood was only for the introduction of Ahlul Bayt (as).