Pensée juive sur La Genèse 49:3

In my view, however, the homily here alludes to the following (Pesachim 56a): "R. Shimon b. Pazi expounded (Genesis 49:1): 'And Jacob called to his sons and said: "Gather together and I will tell you what will befall you in the end of days"' — Jacob desired to reveal the end of days, but the Shechinah departed from him, whereupon he said: "Can it be, G-d forbid, that there is impurity in my seed, as with Abraham, my father's father, from whom Ishmael issued, and as with Isaac, my father, from whom Esau issued?" At this, all of his children answered: "Hear O Israel, the L-rd our G-d, the L-rd is One." "Just as there is only one L-rd in your heart, so there is only one L-rd in ours." According to this homily, this verse, though it constitutes a positive commandment, had already been stated by the tribes. The L-rd had already been praised by it though it is set down in its place as a mitzvah decreed for all generations. This is the intent of "You made Me a distinct entity in this world."