There is a very old voice of the sixteenth century, which speaks to us through the centuries and that voice is the voice of the author of Sri Caitanya Caritamrta, His Divine Grace Krishna Das Kaviraja Goswami and, in Caitanya Caritamrta Adi 8.13, in his original Bengali language, he says the following: 

TEXT 13

ataeva punah kahon ürdhva-bähu hanä

caitanya-nityänanda bhaja kutarka chädiyä

Word for word rendition.

ataeva—therefore; punah—again; kahon—I speak; ürdhva—lifting; bähu—arms; hanä—so doing; caitanya—Shri Caitanya Mahäprabhu; nityänanda—Lord Nityänanda; bhaja—worship; kutarka—useless arguments; chädiyä—giving up.

TRANSLATION

Therefore I say again, lifting my arms: O fellow human beings, please worship Shri Caitanya and Nityänanda without false arguments!

PURPORT by Srila Prabhupada.

Because a person who performs krishna-bhakti but does not understand Shri Krishna Caitanya and Prabhu Nityänanda will simply waste his time, the author, Krishnadäsa Kaviräja Gosvämi, requests everyone to take to the worship of Shri Caitanya and Nityänanda Prabhu and the Panca-tattva. He assures everyone that any person who does so will be successful in Krishna consciousness.

Additional remarks:

His Divine Grace Krishna Das Kaviraja Goswami knew very well that 500 years later, people all over the world will become interested in Lord Caitanya’s Sankirtan movement. Lord Chaitanya Mahaprabhu’s Sankirtan movement was introduced in New York City in 1965 by the specially deputed His Divine Grace A.C. Bhaktivedanta Swami Prabhupada, the Founder-Acarya of ISKCON, founder of the Bhaktivedanta Book Trust and Back To Godhead magazine and author or translator of Bhagavad-gita As Is It, Srimad-Bhagavatam, Caitanya Caritamrta and other important law books.

Srila Krishna Das Kaviraja Goswami does not say:” Oh fellow Bengalis” or “Oh fellow Indians”, he says “Oh fellow human beings”, addressing thus all those souls, all over the world, who have achieved a human form of life and additionally want to take full advantage of it. That means he is addressing many billions of “fellow human beings”. (Currently an estimated 7.76 billion). He also requests us to give up all “false arguments”. That means one’s mind should be straightforward, clear and faithful enough to be convinced that simply by offenseless chanting of the maha-mantra

HARE KRISHNA HARE KRISHNA

KRISHNA KRISHNA HARE HARE

HARE RAMA HARE RAMA

RAMA RAMA HARE HARE

one can achieve the highest perfection of life.

And this is called vyayasayatmika intelligence as confirmed in Bhagavad-gita As It Is 2.41, purport:

“A strong faith in Krishna consciousness that one will thereby be elevated to the highest perfection of life is called vyavasayatmika intelligence. There is a nice verse in the Caitanya Caritamrita (Madhya 22.62) in which it is stated:

sraddha-shabde– vishvasa kahe sudridha nishcaya

krishne bhakti kaile sarva-karma haya

Faith means unflinching trust in something sublime.”

In the process of chanting of the Hare Krishna maha-mantra there are ten offenses to be avoided. There are also three stages of advancement: the offensive stage of chanting, the clearing stage and the stage of pure chanting.

”In the offensive stage of chanting one may desire all kinds of material happiness, but in the second stage one becomes clear of all material contamination. When one is situated on the transcendental stage, one attains the most coveted position—the stage of loving God. Lord Caitanya taught that this is the highest stage of perfection for human beings.” CC Adi preface.

The Panca-Tattva raise Their arms, Krishna Das Kaviraja Goswami lifts his arms and we also raise our arms in unison. It creates a powerful force and communion when thousands of men, women and children raise their arms and chant the following mantras together:

PANCA-TATTVA MAHA-MANTRA.

(jaya) sri krishna caitanya prabhu nityananda

sri advaita gadadhara srivasadi gaura bhakta vrind

HARE KRISHNA MAHA-MANTRA.

Hare Krishna Hare Krishna

Krishna Krishna Hare Hare

Hare Rama Hare Rama

Rama Rama Hare Hare

Actually, the body is just like a wood oven. As soon as all the wood is burnt out the fire smolders under the ashes and the heat abates. The heat of the fire can still be felt but it is much weaker. Similarly, as soon as the body lacks food it feels colder and uncomfortable. Conversely, when one accepts prasadam,  the fire of digestion is kindled immediately and the increased and comfortable heat is felt throughout the body. This is especially felt in wintertime indeed. This process is confirmed in the Bhagavad-gita As It Is 15.14, wherein Krishna confirms that He non-different from the fire of digestion:

TEXT 14

aham vaishvänaro bhütvä

präninàm deham äshritah

pränäpäna-samäyuktah

pacämy annam catur-vidham

WORD FOR WORD RENDITION.

aham—I; vaishvänarah—My plenary portion as the digesting fire; bhütvä—becoming; präninäm—of all living entities; deham—in the bodies; äshritah—situated; präna—the outgoing air; apäna—the down—going air; samäyuktah—keeping in balance; pacämi—I digest; annam—foodstuff; catuh—vidham—the four kinds.

TRANSLATION

I am the fire of digestion in the bodies of all living entities, and I join with the air of life, outgoing and incoming, to digest the four kinds of foodstuff.

PURPORT

According to Äyur-vedic shästra, we understand that there is a fire in the stomach which digests all food sent there. When the fire is not blazing there is no hunger, and when the fire is in order we become hungry. Sometimes when the fire is not going nicely, treatment is required. In any case, this fire is representative of the Supreme Personality of Godhead. Vedic mantras (Brihad-äranyaka Upanishad 5.9.1) also confirm that the Supreme Lord or Brahman is situated in the form of fire within the stomach and is digesting all kinds of foodstuff (ayam agnir vaishvänaro yo ‘yam antah purushe yenedam annam pacyate). Therefore since He is helping the digestion of all kinds of foodstuff, the living entity is not independent in the eating process. Unless the Supreme Lord helps him in digesting, there is no possibility of eating. He thus produces and digests foodstuff, and by His grace we are enjoying life. In the Vedänta-sütra (1.2.27) this is also confirmed. Shabdädibhyo ‘ntah pratishthänäc ca: the Lord is situated within sound and within the body, within the air and even within the stomach as the digestive force. There are four kinds of foodstuff—some are drunk, some are chewed, some are licked up, and some are sucked—and He is the digestive force for all of them.