Ibrahim ibn Adham, who was famous Muslim scholar long ago, was once asked an interesting question:
A group of people came to him and one of them quoted an ayah from the Qur’an that says, “Call on Me and I will answer your prayer.” (40:60)
Then person asked the Muslim scholar, “We pray to Allah, but why are we not answered?”
The scholar said to them, “You know about Allah, yet you don’t obey Him. You read the Holy Qur’an, yet you don’t act according to it. You know how bad Shaytan is, yet you have joined with him. You say that you love the Messenger of Allah sallallahu ‘alaihi wasallam, yet you abandon his sunnah. You declare that you love Paradise, you don’t do anything to obtain it. You declare you’re afraid of the fire, yet you don’t keep yourselves from committing sins. You agree that we will all die, yet you are not prepared for it. You’re busy finding faults with others, yet you don’t look at your own faults with others, yet you don’t look at your own faults. You eat the food Allah provided for you, yet you don’t thank Him and you bury your dead, yet you don’t take any lesson.