وَالَّذِينَ كَذَّبُواْ بِآيَاتِنَا صُمٌّ وَبُكْمٌ فِي الظُّلُمَاتِ مَن يَشَإِ اللّهُ يُضْلِلْهُ وَمَن يَشَأْ يَجْعَلْهُ عَلَى صِرَاطٍ مُّسْتَقِيمٍ

39. Those who deny Our signs and Revelations are deaf and dumb in veils of darkness. Whomever God wills, He leads astray, and whomever He wills, He sets on a straight path.⁹

9. It is sometimes necessary to explain what making one's guidance or misguidance by God's absolute Will means.  Here we will give a brief overview: 

The original word rendered as “will” is Mashīah . God has two kinds of will, one Mashīah , and the other Irādah . God does not will ( irādah ) unbelief, polytheism, hypocrisy, and sins, but these are all—like faith, good deeds, and virtues— [J1]   [J2]   included in His Mashīah , which is associated with His Knowledge or which can be regarded as “Pre-knowledge.”

As knowledge depends on what is known, and since it is eternally known to God how each person will use his free will, God's Mashīah encompasses human free will. In other words, as God cannot be contained by time, as He is beyond all time and space, and therefore, as He knows how each person will use his free will, He wills accordingly.

A person uses his free will to believe or not to believe. But it is God Who puts into effect human free will and Who creates the deeds of people.

Human choices and inclinations, including every thing and every event in the universe, even the movement of a leaf, occur within the universal system that God has established. So, nothing is excluded from God's Knowledge and Will ( Mashīah ).