I believe the discussion of time you are referring to in
The Concept of Anxiety begins in the third chapter (section IV 355). It begins with:
Man, then, is synthesis of psyche and body, but is also a synthesis of the temporal and the eternal. That has often been stated. I do not object to it at all, for it is my joy and dearest occupation to ponder over that which is quite simple.
As for the latter synthesis, it is immediately striking that it is formed differently from the former. In the former, the two factors are psyche and body, and spirit is the third, yet in such a way that one can speak of a synthesis only when spirit is posited. The latter synthesis has only two factors, the temporal and the eternal. Where is the third factor? And if there is no third factor, there really is no synthesis, for a synthesis that is a contradiction cannot be completed without a third factor, because the fact that the synthesis is a contradiction asserts that it is not. What, then, is the temporal? — Translated by Reidar Thomte
The remainder of chapter 3 builds from his explanation of the temporal in order to separate expectations of fate from freedom and the consciousness of sin. I would summarize that portion if I could. But, even if I was more able, the summary could only be understood by some one who traveled the distance by themselves. So, with the caveat of how the sentence could be wildly misunderstood out of context, I will pluck the following out of section (IV 374):
However, to explain how my religious existence comes into relation with and expresses itself in my outward existence, that is the task."
(Same translator as cited above)
The next chapter, Number Four, is titled: "Anxiety of Sin or Anxiety as the Consequence of Sin in the Single Individual." The chapter includes the distinction between good and evil and it how that relates to the possibility for freedom. Kierkegaard also introduces his view of the demonic as a result of that relationship. The problem of "inclosing reserve" is that it is a necessary condition of any single individual acting as themselves but is also a source of suffering and personal existential peril. To answer your question about a "model of the good parent", I will rip another bit of text out of context. It comes with that bitter quality of understatement Kierkegaard uses when very pissed off about something:
However, the tormentor of inclosing reserve may also relate himself selfishly to his own inclosing reserve. About this I could write a whole book, although I have not been, according to the custom and the established convention among the observers of our day, in Paris and London, as if by such visits one could learn something great, more than chatter and the wisdom of traveling salesmen. If an observer will only pay attention to himself, he will have enough with five men, five women, and ten children for the discovery of all possible states of the human soul. What I have to say could indeed have significance, especially for everyone who deals with children or has any relation to them. It is of infinite importance that the child be elevated by the conception of lofty inclosing reserve and saved from the misunderstood types. In an outward respect, it is easy to determine when the moment arrives that one dares let a the child walk alone; in a spiritual respect, it is not so easy. In a spiritual respect, the task is very difficult, and one cannot exempt oneself by employing a nursemaid or by buying a walker. The art is that of constantly being present, and yet not being present, so that the child may be allowed to develop himself, and at the same time one has a clear view of the development. The art is to leave the child to himself in the very highest degree and on the greatest possible scale, and to express this apparent relinquishing in such a way that, unnoticed, one is aware of everything. If only one is willing, time for this can very well be found, even though one is a royal officeholder. If one is willing, one can do all things.
And the father or the educator who has done everything else for the child entrusted to him, but has failed to prevent him from becoming closed up in his reserve, has at all time incurred a great liability. — Same translation as above, starts within section (IV 393)