(again, some of these posts are works in progress, so please bear with me...)
As discussed last week, in reality our entire existence is dependent on Hashem, and our neshomos desire nothing less than complete dveikus. G-d is the ultimate perfection, and by acting in G-d’s ways and becoming like G-d we share in that perfection and achieve dveikus. However, as symbolized by the moon, which is always smaller and incomplete in comparison to the sun, physical existence by definition blocks complete dveikus, otherwise we would have no independent identity. Olam=he’elam, concealment, or as the Ishbitza puts it on “vayapeil Elokim tardeima”, man must by existential definition be in a state of unawareness.
What is the purpose of G-d concealing himself from us? “Rotzeh adam b’kav shelo yoseir m’tisha kabin shel chaveiro” – a person is always more satisfied by something that is truly theirs more than a free gift or loan even of a better product. If G-d gave us the gift of perfection, meaning complete dveikus, without our earning it, that gift itself would be tainted by its being an unearned reward, “nahama d’kisufa”. Therefore, G-d placed himself in concealment and gave us an independent identity so that we may become like Him through our own efforts.
Why could Hashem not simply have made us happy with receiving the free gift of dveikus? The answer I think is because that would be a logical contradiction. If the ultimate purpose of man is to achieve dveikus by imitating G-d, the fact that G-d is an independent cause of His own actions and man is not presents an unbridgeable gap. It is the miracle of bechira that comes about because G-d chooses to conceal himself which presents us with the opportunity to truly imitate Him by acting on our own initiative. “Vayapeil…tardeima” is a “nefila l’tzorech aliya”, a fall that ultimate empowers man to rise to even greater heights.