If God Knows Everything, Do We Have Free Will?

It is one of the oldest puzzles in religion and philosophy, and it troubles believers as much as sceptics. If God already knows everything I will do, are my choices really mine? And if they are not, how can I be judged for them? Islam does not avoid this question, and its answer has two sides that must be held together.

Two truths held together

The sixth article of Muslim faith is belief in qadar, God’s decree: that nothing happens in the universe outside His knowledge, will and power. At the same time, the Qur’an addresses human beings as free and responsible. It says that God has shown people the way, and each is either grateful or ungrateful (Qur’an 76:3), and it tells the Prophet ﷺ to declare: the truth is from your Lord, so whoever wills, let him believe, and whoever wills, let him disbelieve (Qur’an 18:29).

The Qur’an puts both truths side by side in a single passage:

لِمَن شَآءَ مِنكُمْ أَن يَسْتَقِيمَ ﴿٢٨﴾ وَمَا تَشَآءُونَ إِلَّآ أَن يَشَآءَ ٱللَّهُ رَبُّ ٱلْعَٰلَمِينَ ﴿٢٩﴾

²⁸For whoever wills among you to take a right course. ²⁹And you do not will except that Allah wills - Lord of the worlds.

Human beings have a will, and they use it. But that will exists within God’s will, not outside it or against it. Mainstream Sunni scholars describe God’s decree as including four things: His knowledge of all things, His recording of them, His will, and His creation of all things, including our actions, while the choosing and the responsibility are ours.

Knowing is not forcing

Part of the puzzle comes from imagining that if God knows what I will do, His knowledge pushes me into doing it. But knowledge does not cause. An astronomer who knows exactly when tomorrow’s sunrise will happen does not make the sun rise. God’s knowledge is perfect and timeless; He knows what each person will freely choose. That foreknowledge describes our choices; it does not replace them.

The Qur’an describes the human soul as given the capacity to recognise good and evil, and makes success depend on what we do with it:

وَنَفْسٍۢ وَمَا سَوَّىٰهَا ﴿٧﴾ فَأَلْهَمَهَا فُجُورَهَا وَتَقْوَىٰهَا ﴿٨﴾ قَدْ أَفْلَحَ مَن زَكَّىٰهَا ﴿٩﴾ وَقَدْ خَابَ مَن دَسَّىٰهَا ﴿١٠﴾

⁷And [by] the soul and He who proportioned it ⁸And inspired it [with discernment of] its wickedness and its righteousness, ⁹He has succeeded who purifies it, ¹⁰And he has failed who instills it [with corruption].

“Then why should we act?”

The companions asked the Prophet ﷺ almost exactly this question. If our destinies are already written, should we not simply rely on that and stop working? His answer was clear:

…Carry on doing (good) deeds, for everybody will find easy to do such deeds as will lead him to his destined place for which he has been created.…

In other words, the decree is not a reason to stop; it is unfolded through what we do. No one knows what is written for them, so the only sensible course is to choose good and strive for it.

Only what is within our power

Islam is also clear that God is perfectly just. He holds people responsible only for what lies within their capacity (Qur’an 2:286). A person who is forced, who forgets, who has not reached maturity or who has lost their reason is not held to account in the same way. No one will be punished for something they had no power over. And no one may excuse their own wrongdoing by saying “it was written”: the wrong was chosen, and its choosing is theirs.

Peace in hardship

For Muslims, belief in decree is less a philosophical theory than a source of strength. The Prophet ﷺ described the balance:

…cherish that which gives you benefit (in the Hereafter) and seek help from Allah and do not lose heart, and if anything (in the form of trouble) comes to you, don't say: If I had not done that, it would not have happened so and so, but say: Allah did that what He had ordained to do…

Work hard, plan well, ask God for help; and when something happens that you could not prevent, do not torture yourself with “if only”. This is why many Muslims meet loss and disappointment with remarkable calm. It is not resignation, but trust.

The common misunderstanding

The common misunderstanding is that Islam teaches fatalism: that Muslims believe everything is fixed, so effort is pointless. The Prophet ﷺ himself rejected that reading. Islam teaches full effort and full trust together. The details of how God’s will and ours fit together are, in the end, part of a wisdom that human minds cannot fully grasp, and scholars have always warned against arguing about it endlessly. What we can know is enough: God is just, our choices are real, and we will be judged fairly.

To see how this fits into the wider Muslim faith, read the six articles of faith and the purpose of life.