The Days of Yaakov and the Light of Avodoh

ח"כפ ז"מ קרפ תישארב :'וכ ויָיַּח יֵנְשׁ בֹקֲעַי יֵמְי
The days of Yaakov – the years of his life etc. (47:28)

Since the core spirit of a Tzadik are those days that he gains in them the light of Avodoh (fulfilling the desire of Hashem) and they are called Days. In the focus, as it says (Bereishis 1:5) Hashem called to the light: “Day,”. And that is “And the days of Yaakov”, meaning, the days that he added in them the light, those are the significant days of his life ל"קו.

Sefer Noam Elimelech