ready now – nope, perceive does not mean “to know”:
1. To become aware of directly through any of the senses, especially sight or hearing.
2. To achieve understanding of; apprehend. [Middle English perceiven, from Old French perceivre, from Latin percipere : per-, per- + capere, to seize; see kap- in Indo-European roots.]
Note that even in the 2nd definition, it means to acquire understanding that was not previously there (“achieve”). HKB’H does neither of those, He just knows without perceiving.