The same can be said for any suspicion about Allah that contradicts our belief that He is All-Powerful, Most Generous, and Most Merciful.
The Qur’ân provides us with examples of those who had bad expectations about their Lord. For instance, Allah tells us about the disbelievers of Mecca who went up to Prophet Muhammad (peace be upon him) and argued that if they accepted the faith, they would endanger the strong position of Mecca as well as their personal status and property.
It sayd in the Qur’ân: “And they say: ‘If we follow the guidance with you (O Muhammad), we shall be carried off from our country.’ What! Have We not established for them a sure sanctuary, whereunto the produce of all things is brought (in trade), a provision from Our presence? But most of them do not know.” [Sûrah al-Qasas: 57]
These were people of Mecca were afraid that tribes of Arabia would turn against them if they abandoned their idols and turned to the worship of the one true God. They worried they would lose their prestige they enjoyed among the Arabs by being the caretakers of the Ka`bah and the idols, and feared that the various Arab tribes would fight them instead.
This shows their bad expectations of Allah. They expected that Allah would not protect His religion and assist those who uphold it. In spite or recognizing the truth in Islam’s message, they thought that falsehood would prevail.
We find another good example of someone expecting bad about Allah in the Sunnah. The Prophet (peace be upon him) said:
A man once said: “Allah will not forgive so-and-so.”
As a consequence, Allah said: “Who is this who presumes to exceed My authority by declaring that I will not forgive someone? Indeed, I have forgiven that person and brought your deeds to naught.” [Sahîh Muslim (4753)]