Kabbalah zu Bereschit 24:1

{Elijah} opened and said, 'Faithful Shepherd, the Holy One, blessed be He gave this bride of yours, [ this refers to Malchut/Kingship] to Abraham to bring up for you. And since he kept her she is called his daughter. This is what is meant by the saying that Abraham had a daughter whose name was 'Bakol (Eng. 'in all')'. By her he observed the whole Torah even the Eruv Tavshilin (an action allowing one to cook on holiday for Shabbat). This is the meaning of, "and kept My charge" (Genesis 26:5). And he brought her up, as written, "And he brought up Hadassa" (Esther 2:7). And the Holy One, blessed be He, blessed him for her sake, as it is written, "and Hashem had blessed Abraham in all things (בַּכֹּל)" (Genesis 24:1). He brought her up with every good virtue and was charitable to her. He raised her to greatness, with the quality of kindness (Chesed) of Abraham. His house was, for her sake, wide open to do kindness to all the people of the world.

And some times the name Adona"y is called by the nickname "All/kol", and the reason is that there is absolutely no lack in it, behold: all types of flow and emanation and all types of blessing and the maintaining, all enter through it. And it is called Ko"l because all is in it, and regarding every type of need that anything needs in the world there is no deity to request it from except this, and no other place from where to request, because all is included in this name and from this place every requester will express their will, each according to their need and will, as s/he calls God with integrity (See Psalms 145:18). And more, Yesod, which is the aspect just above this, is called Kol/All, for principles that will be explained later with the help of Hashem. And this aspect that is called Ko"l was given as a gift by Y"Y to Avraham, as I explained to you, that behold that is the basis of the blessing and the pool. And regarding this there is the hint in It saying: "And Y"Y blessed Avraham with All" (Genesis 24:1). And from Avraham to Yitzchak, in It saying: "and I ate from All before you came and I blessed him" (Genesis 27:33). And from Yitzchak to Ya'akov, in It saying: "since Elohim was gracious to me and since I have All" (Genesis 33:11) the explanation is that Ya'akov said to Esav: lest you think that I will have any lack due to giving to you? Know that all the keys of the upper blessing are all given into my hand, and behold it is included in All, and this is "because I have All", and therefore I do not lack anything in giving something to you.

Thus, it is written, "And Abraham was old, advanced in age" (Beresheet 24:1), that is, in the shining lights (of benevolences). And he is old, as it is written, "that shines ever more brightly until the height of noonday" (Mishlei 4:18). Therefore, "And Elohim called the light Day." "And the darkness he called Night." This is Isaac, who is dark, and gets to receive the night within him. Therefore, when he grew older, it is written, "And it came to pass, that when Isaac was old, and his eyes were dim, so that he could not see" (Beresheet 27:1). (he had become completely dark). Assuredly he had to be (totally) dark to cleave well to his grade.