A Very Important Matter

مسبة الله كفر سواء كان الشخص غاضبا أو مازحا. و من سبَّ الله عليه أن يتشهد للرجوع للإسلام.
هذه الدنيا لا تستحق أن يعصى الله لأجلها.

There is consensus among the scholars of this nation that whoever cusses Allah blasphemes.
It does not change the judgment whether the person was angry or joking.
The person who cusses Allah has to say the Two Testifications of Faith to  return to Islam.

This life is not worth disobeying the Creator for it.