Chasidut su Salmi 30:1

... We have to understand why they (the rabbis) made a holiday, and established that we should say Hallal and praise, on the miracles of the eighth days of Hanukkah and of Purim, but did not make a holiday on the days of the wars of Sisera (Judges 4), and the wars of Sennacherib (Kings 19), that were also great miracles? ... But (the explanation is, that) only these miracles that are forefather and ancient prophets saw that with our good deeds and action these graces (good revelations) are being revealed again and again, in every year, and in every generation --- those where the days they turned into holidays. And that is why the Talmud says (Shabbat 36) that "on the next year they made it a holiday and established it with Hallal and praise." They mean, that they established that these revelations, and the miracles, and the the graces, will be forever. And with that we bring forward the light (revelation) forever, in every time. And that is what they mean they have "established" it, meaning that they have established it in every generation. [translators note: this is a draft, and incomplete translation]

As Rashi, may his memory be blessed, explains the word chinukh (education), in the verse (Deuteronomy 20:5), "who built a house but did not dedicate it (chankho) - "Chinukh is a term for beginning." But it is obvious that we would not say, chinukh, about any beginning. For example, when the Gemara (Pesachim 116a) says about the order of the Haggadah, "One begins with disgrace and ends with praise," we would not say, "One is mechanekh with disgrace, etc." And likewise regarding the Sanhedrin (Sanhedrin 32a) - that we begin from the side - we would not say that, we are mechankhin from the side. However in Parashat Lech Lecha (Rashi on Genesis 14:14), Rashi explains it further to us, as follows: Chanikhiv, etc. whom he had trained in the commandments. It is a term for introducing a person or a thing, for the first time, to some particular occupation in which it is intended that he should remain. It has a similar sense in (Proverbs 22:6), "Chanokh the lad," in (Numbers 7:84) "the dedication (chanukat) of the altar" and in (Psalms 30:1) "The dedication (chanukat) of the house."