To summarize: When Eyn Sof, in His perfect wisdom, wanted to institute a system of service, He calculated in what arena it would be applicable. He knew that there was no aspect of His perfection in which there was any need at all for His creatures or any place for their service except in the bestowal of good, whereby evil itself reverts into good. This is the fundamental concept of perfect unity about which I wrote.
In God’s aspect of complete perfection, there is no place whatever for service. However, because the very concept of oneness and unity involves the hypothetical possibility of imperfection (not that it exists, but that it is negated through the power of perfection) it was therefore pertinent that in order to reveal His goodness, He should conceal His perfection – in order then to reveal it in actuality.
This is like “damaging in order to repair”. On this foundation He did all His work: He made a place for independent beings and a place for their service, and fixed a very precious reward for them.