1. Allah is most Merciful
The Qur’an says several times that Allah is the most Merciful. In fact all the 114 Surahs i.e. chapters of the Glorious Qur’an except for Surah Taubah chapter 9, begin with the beautiful formula, Bismillah-hir-Rahman-nir-Rahim, which means, "In the name of Allah, Most Gracious, Most Merciful".
2. Allah is Forgiving
The Glorious Qur’an mentions in several verses including Surah Nisa, chapter 4 verse 25 and Surah Maidah, chapter 5 verse 74:
"And Allah is Oft-Forgiving, Most Merciful."
3. Allah gives severe punishment to the deserving
Allah besides being Merciful and Forgiving is also strict in giving punishment to the deserving. The Qur’an mentions in several verses that Allah will give severe punishment to the unbelievers and rejecters of faith. He will give punishment to all those who disobey Him. Several verses of the Qur’an describe the various types of severe punishment that Allah will give in hell to all those who disobey.
"Those who reject our Signs, we shall soon cast into the Fire; as often as their skins
Are roasted through, we shall change them for fresh skins, that they may taste the penalty: for Allah is Exalted in Power, Wise".
4. Allah is Just
The question is, whether Allah is forgiving or revengeful? An important point to be noted is that Allah besides being Merciful and Forgiving, He also has to give severe punishment to the deserving wicked or evil people, because He is also Just. The Qur’an mentions in Surah Nisa: "Allah is never unjust in the least degree".
It is further mentioned in Surah Al-Ambiya:
"We shall set up scales of justice for the day of Judgement, so that not a soul will be dealt with unjustly in the least. And if there be (no more than) the weight of a mustard seed, we will bring it (to account): and enough are we to take account".
5. Example: Teacher forgives a student who copies in the examination
If during an examination, a student copies and the teacher who supervises in the examination catches the student red-handed, the teacher says that he is very merciful and kind and forgives him and allows him to continue copying. Those students who have worked hard for the examination will not call the teacher merciful and kind but will call him unjust. This merciful act of the teacher will encourage the other students to also copy. If all the teachers are merciful and kind and allow the students to copy then no student will ever study for examinations and all will pass with flying colours by copying. The theoretical results of the examinations will be excellent in which all the students will pass with first class and distinction but practically these students will be a failure in life. The whole purpose of the examination would be defeated.
6. This Life is a Test for the Hereafter
The life in this world is a test for the Hereafter. The Qur’an says in Surah Al Mulk: "He who created Death and Life, that He may try which of you is best in deed; and He is the Exalted in Might, Oft-Forgiving".
7. If Allah forgives all and punishes none, who will obey him?
If Allah (swt) forgives each and every human being and punishes no one, then why should the human beings obey the command of Allah (swt)? I do agree that no one will go to hell, but this world would become hell to live in. If all human beings are going to go to heaven then what is the purpose and use of the human beings to come to this world, this life cannot be called a test for the hereafter.
8. Allah only forgives if a person repents
Allah (swt) only forgives if a person repents. The Qur’an says in Surah Al-Zumar, chapter 39 verse 53-55:
"Say: ‘O my servants who have transgressed against their souls! Despair not of the Mercy of Allah: for Allah forgives all sins for He is Oft-Forgiving, Most Merciful."
"Turn ye to your Lord (in repentance) and bow to His (will), before the penalty comes on you - after that ye shall not be helped."
"And follow the best of (the courses) revealed to you from your Lord, before the penalty comes on you - of a sudden, while ye perceive not!"
There are four criteria for repentance: First, agree that the act is wrong. Secondly, stop it immediately. Thirdly, never do it again in future. And lastly, compensate for the loss if caused to anyone.