Similarly, there is a cosmic order that must be acknowledged in human society. The saintly, who even while eating perform sacrifice by offering food in sacrifice and then eating the remnants, are released from all evils. The wicked, who cook only for themselves, eat only their own impurity. Here Krsna cites the common act of eating as an example of how far reaching the principle of sacrifice is for human society. The very act of eating should be one of sacrifice.
Enjoyment is truly only that which is the fruit of sacrifice.
The act of 'saying grace' before one's meal is the heart of Krishna's instruction in this verse. In the strict Vedic sense this verse refers to the means by which the householder is freed from evil acts performed inadvertently. Thus by performing the five sacrifices one counteracts the sins inadvertently committed by using the five items essential to the householder's livelihood. Central to these sacrifices is the offering of food to the gods in the Vaisvadeva yajna. Taking this verse beyond the scope of the Vedic law to the heart of the principle of sacrifice, Bhaktivedanta Swami Prabhupada comments that the devotees, who are truly saintly people, are freed from all sins merely by the act of offering all of their food to Krishna and partaking of the remnants.