Now, God or God's agent is supplying you so many things, and if you do not acknowledge or repay by sacrifice, then what is your position? Yo bhuṅkte. "One who enjoys," stena eva saḥ, "he is a thief." He is a thief, therefore, punishable. As a thief is punishable by the state law, similarly, one who takes advantage of these natural facilities and do not acknowledge it and do not offer sacrifice to the Supreme, then he is considered to be a thief. It is said in the Bhagavad-gītā, stena eva saḥ (BG 3.12). So yajña-śiṣṭāśinaḥ santo mucyante sarva-kilbiṣaiḥ. So, we are becoming debtors and debtors life after life in this way, and the only way to liquidate our so many debts is to perform yajña.
Now, there are different rituals of yajña. If we want to perform such yajñas for sacrificing clarified butter, grains, there are different, so many kinds of yajñas. It is not possible in this age. For this age, the particular type of sacrifice which is recommended, we had some sample of it yesterday in our, this loft. Yajñaiḥ saṅkīrtana-prāyair yajanti hi su-medhasaḥ (SB 11.5.32). In this age it is very difficult to perform all those rituals. First thing, it is very difficult to obtain all the ingredients for sacrificing method. And people are not very well to do. They cannot secure also.