The principle of sacrifice mentioned in this verse refers to acknowledgment of our dependence on the presiding deities. This act of acknowledgment helps people realize that they are not independent in life, but part of an interdependent system in which humanity and nature flourish in the culture of God-consciousness. This gradual culture leads to the ultimate good for all concerned. The gods, nourished by sacrifice will certainly bestow the fulfillment of your desires. However, one who enjoys the gods' natural gifts without acknowledging the gods themselves is a thief.
False proprietorship is the basic misconception our material lives are based on.
If we do not acknowledge our indebtedness to others, we are criminal. The debt incurred from enjoying the bounty of nature must be acknowledged and repaid. This is the principle of sacrifice. In our everyday modern experience we must acknowledge the municipality for our supply of heat, light, water, and so on. If we do not do so by paying our monthly bills, we break the law.