In the Qur’an, Allah refers to Himself as,
… the Most Merciful of the merciful… (Al-Anbiyaa’ 21: 83)
It is also stated that:
Provided that one asks for repentance, anyone who does evil will find Allah forgiving. (An-Nisaa’ 4: 110)
For this reason, people must reflect upon this attribute of Allah and pray with hope. No matter how serious an error a person may have committed, and is in deep remorse over it, it is not a reason for him or her to despair of Allah’s forgiveness. Thus, the state of mind caused by erring and committing a sin must never become an impediment for a prayer of hope for forgiveness, for Allah states in the Qur’an that only disbelievers lose hope in Allah’s mercy:
… Do not despair of solace from Allah. No one despairs of solace from Allah except for people who disbelieve. (Yusuf 12: 87)
In addition, no one is immune to punishment in Hell. Indeed Allah warns people against this, saying:
No one is safe from the punishment of his Lord. (Al-Ma`arij 70: 28)
For this reason, everyone must fear Allah as much as he or she can. Human beings, whose life is a test, are always vulnerable to Satan’s cunning deceptions and are thus very likely to go astray and turn away from the righteous path. Nobody is guaranteed a place in Paradise. This makes a person fear failing to attain Allah’s good pleasure, while hoping for Allah’s mercy.
Indeed, one of the attributes of a true believer that distinguishes him from all others is his fear of Allah, since a disbeliever doubts even the existence of Hell. Believers, however, are fully cognizant of Hell’s existence, and they see it as a very serious threat. Having an unswerving faith in the Day of Judgment, they feel the greatest fear.
Only a person who has faith in Allah and avoids arrogance is influenced in her conduct by this fear: she feels no doubt about the existence and severity of the torment of Hell, and never assumes an attitude or behavior that may involve the risk of being thrown into it. She only aspires to the life in the hereafter that abounds with infinite beauty and makes every effort to distance herself from torment.
The fear a believer feels for the hereafter manifests itself in his or her prayer. That is why we find the concepts of fear and hope side by side in the Qur’an. If a person fails to fear the torment of Hell while praying, this is due to an essential failure of thinking and comprehension. Just as how eagerly a person prays to attain Paradise, so must he, for avoidance of Hell.
In other words, through fear of Hell, he hopes to attain Paradise. Some of the verses that mention this are as follows:
Do not corrupt the earth after it has been put right. Call on Him fearfully and eagerly. Allah’s mercy is close to the good-doers. (Al-A`raf 7: 56)
Their sides eschew their beds as they call on their Lord in fear and ardent hope. And they give of what We have provided for them. (As-Sajdah 32: 16)
As is seen, fear and hope are the two essential feelings that are proper to prayer as described in the Qur’an. In fact, a careful scrutiny of the Qur’an reveals the vital importance these two concepts represent for all forms of worship and in every instant of one’s life.
We must remember that prayer is both an important duty towards Allah and a means that will help us attain our next lives, for in the Qur’an Allah states that the end of those who fail to offer prayers to Allah will be the eternal torment in Hell. Your Lord says:
Call on Me and I will answer you. Those who are too proud to worship Me will enter Hell abject. ( Ghafir 40: 60)
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Source: Quoted with slight modifications from Harun Yahya’s Prayer in the Qur’an.