Kommentar zu Bereschit 47:29

...Rashi says the kindness you do with those that passed away is called true kindness becuase you're not expecting any reward. Ramban asks Rashi, by Eliezer, Avraham asked Eliezer to do kindness and truth with him, but there he wasn't passing away. It appears to me this how we should explain Rashi: there are some people who merit to have a very lofty soul at birth, while others, later on in life, can attain a lofty soul by doing a mitzvah with a good intention (as is known in Kabbalistic circles). So when you merit this soul (from your good intent), you attain more strength and power in your service of Hashem because these souls assist you. This is when the Talmud means when it says that "if someone wants to become pure, they assist him." "They" refers to those souls. It also says in the Talmud that "they tell him to finish the mitzvah." Who tells it to him? These souls which he has acquired tell him to finish the mitzvah. This is also the meaning of the Mishna: "your house should be a house where the wise men meet." As it says in the Torah, "with wisdom you can build a house." That is referring to the soul: what it means that by preparing your soul you will merit to have many souls of the wise." Like we find by the Ri M'Gash, he had many souls for the Tannaim in him, as the Arizal says. The Mishna continues "and you should drink their words with thirst" means that you will do mitzvot with passion, because they [the souls] will inspire him. This is meaning concerning the building of the Mishkan, "and all the wise-hearted among you will come and do." The wise-hearted refer to these souls that have become part of you; they will do all that G-d has commanded. Also in the possuk: all wise-hearted among will perform the task. What that means that is that these supernal souls will work with you to build the Mishkan with the deepest mystical intent. This is what Rashi means with kindness of truth: this means that these holy souls, which have passed away, what they do with you is a kindness of truth because their intent is certainly true, without expecting any ulterior motive.

ויקרבו ימי ישראל למות AND WHEN THE DAYS OF ISRAEL S DEATH APPROACHED — Everyone of whom it is stated that his days drew near to die did not attain to the age of his fathers (Genesis Rabbah 76:3). Some editions add: Isaac lived 180 years, whereas Jacob lived only 147. Similarly it is said in the case of David, “his days drew near” and he lived 70 years, whereas his father reached the age of eighty.

AND WHEN THE DAYS OF ISRAEL DREW NEAR TO DIE. This means when the time for Israel’s death approached, which was during the last year of his life,⁹Ramban’s intent is to say that the verse does not refer to Jacob’s day of death but to the general period in his life when he felt his powers beginning to ebb. he called his son Joseph. The purport of it is that he felt exhaustion and undue weakness in himself, but he was not sick. Rather, he knew that he would not live much longer, and therefore he called his son Joseph. Now after Joseph returned to Egypt [from visiting with his father who lived in Goshen, Jacob] became ill, whereupon Joseph was informed, and he came before him with his two sons so that he [Jacob] would bless them.
In a similar sense is the verse, Now the days of David drew near that he should die,¹⁰I Kings 2:1. There too the sense of the verse is that this occurred some time before David’s death. and there it says, I go the way of all the earth,¹¹Ibid., Verse 2. [which clearly indicates that the meaning of the first verse is] that David knew in his heart that his end was approaching.