وَلَا ضَرُورِيٌّ وَلَا مُكْتَسَبٌ
And it is neither necessary in the created sense nor acquired.
For human beings, necessary knowledge is not achieved through deliberate reasoning; acquired knowledge results from learning, reflection, or other means of acquisition. Both are classifications of created states of cognition.
Divine knowledge fits neither class. God requires no teacher, sense organ, instrument, inferential effort, or involuntarily arising new cognition. Non-acquisition must not be read as absence of knowledge: the point is that divine knowledge is already perfect and eternal.