وَلَهُ عِلْمٌ أَزَلِيٌّ شَامِلٌ
And He possesses eternal, all-encompassing knowledge.
Eternal excludes origination or gradual accumulation in God's knowledge; comprehensive excludes any knowable reality lying beyond it. Known events may be described as past, present, or future without implying that the divine attribute itself comes into being in successive stages.
Human knowledge is partial: a person may know one aspect of a subject while remaining ignorant of another. Such a division into knowledge and ignorance cannot be transferred to divine perfection. Divine knowledge is inherent, not acquired, and encompasses all objects of knowledge.