Indeed, these sacrifices are intended to enable them to gradually become conscious of Krishna, the Supreme Personality of Godhead, in order to acquire all the traits of virtue. Let us understand that chanting the holy names of God and Krishna consciousness go hand in hand.

Truly, Krishna being the All, the Infinite Absolute, one who chants “hare Krishna” is in fact performing all kinds of sacrifices.

Lord Krishna adds: For, just as a great sheet of water at once fulfills all the functions of the well, so one who knows the ultimate purpose of the Vedas (the original holy scriptures, also called “the true gospel”) reaps all the benefits they provide.

True sacrifice is not the slaughter of an animal; no, true sacrifice is the ceremony through which one seeks to please Krishna, the Supreme Personality of Godhead, to please Him.

Every human being must seek to know whether God is pleased with their behavior and actions. In other words, all our actions should contribute to the Lord's satisfaction. Each of us must be concerned with whether Lord Krishna, Godhead, is pleased with our actions. Activities aimed at pleasing the Lord are prescribed in the holy scriptures, and performing them constitutes sacrifice.

In other words, sacrifice is acting for the satisfaction of the Supreme Lord, Krishna.

Let us understand that all our thoughts, words, and actions generate positive or negative effects, which will inevitably lead to beneficial consequences for the positive effects and painful ones for the negative effects. As soon as we act for our own pleasure, in a selfish and personal manner, we must also accept the consequences that follow. We ourselves are the cause of our own suffering.

Let us carefully understand that any act performed other than sacrifice binds its doer to matter and keeps him imprisoned in this material world. If we do not act for the satisfaction of the Supreme Lord, Krishna, then we will be chained to the consequences of our actions. We must not act for our own pleasure, but for God's.

This is what is meant by true sacrifice.

Truly, all divine beings, all celestial beings, are satisfied when a sacrifice is performed. Indeed, celestial beings rely on the sacred meal offered to God during these sacrifices, hence their necessity.

Materialists who engage in acts aimed at gratifying the senses must perform sacrifices, otherwise they will chain themselves to the consequences of their actions.