For you are a holy people unto the L-rd your G-d (Deut. 14:2)
The Torah enjoins us: you should be a holy people of your own free will and under your own initiative. Do not leave the task of making you behave properly to the gentile nations, who will make you holy martyrs through their decrees and their persecutions.
(Shaar-Chaim)
And you will say, "I wish to eat flesh," because your soul longs to eat flesh (Deut. 12:20)
The desire to eat meat originates in a person's soul. What then, is the connection between the food that one eats to sustain the corporeal body and the desires of the spiritual, intangible soul?
A Jew's G-dly soul "longs" to elevate and reveal the spiritual sparks of holiness which are concealed in physical objects. The Torah states, "not by (physical) bread alone shall a man live, but by each utterance of G-d (the G-dly spark which is hidden in the food), shall a man live." Eating flesh, or eating bread, is just one way in which the concealed sparks in the physical world are elevated by a Jew.
The Baal Shem Tov explained that when a person gets a sudden desire to eat or drink a particular food or beverage, the reason is that his soul desires to elevate the spark within that food, as it states in Psalms, "hungry and thirsty, their soul shall be enveloped in them."
(the Rebbe)
And your eye be evil against your needy brother (Deut. 15:9)
If you look at your poor fellow Jew with an evil eye, searching for defects and sins in him in order to explain your own stinginess and unwillingness to help, then "he shall cry out to G-d against you, and it shall be a sin in you"- G-d will regard you accordingly, searching for your even graver transgressions and defects.
(Rabbi Shmelke of Nicholsberg)
The blessing, if you will listen to the commandments of G-d (Deut. 11:27)
Being able to listen to G-d's commandments is in itself a blessing. You should be able to hear and absorb G-d's words in your very soul.
(Rabbi Shimshon Rafael Hirsch)