Bg. 3.14

अन्नाद्भवन्ति भूतानि पर्जन्यादन्नसम्भवः ।
यज्ञाद्भवति पर्जन्यो यज्ञः कर्मसमुद्भवः ॥१४॥


annād bhavanti bhūtāni
parjanyād anna-sambhavaḥ
yajñād bhavati parjanyo
yajñaḥ karma-samudbhavaḥ


annātplugin-autotooltip__small plugin-autotooltip_bigannāt

from grains.
—from grains; bhavantiplugin-autotooltip__small plugin-autotooltip_bigbhavanti

abide; all become possible; appear; are; are existing; are generated; arise; become; become possible; can become; exist; flourish; grow; there are; they become.
—grow; bhūtāniplugin-autotooltip__small plugin-autotooltip_bigbhūtāni

all beings; all created beings; all creation; all kinds of living entities; all living beings; all living entities; all people; all that are created; all the bodies of the living entities; all the living entities; all things; all this material manifestation; all those materially born; and the other living entities; created beings; different varieties of living entities; elements; entities; everything created; ghosts; living beings; living entities (that are born); living entities; living entities or servants; offspring; other living entities; personalities; persons; the living beings; the living entities (animals); the living entities; the material bodies; to ghosts and spirits; to living entities; unto the living entities in general; which are produced.
—the material bodies; parjanyātplugin-autotooltip__small plugin-autotooltip_bigparjanyāt

from rains.
—from rains; annaplugin-autotooltip__small plugin-autotooltip_biganna

by eating; cooked rice and vegetables; different kinds of food; eatables; food; food grain; food grains; grains; of rice; of rice and other eatables; remnants of food; rice; the eatables; the food.
—food grains; sambhavaḥplugin-autotooltip__small plugin-autotooltip_bigsambhavah

accepting birth; appearance; are made possible; birth; born; born of; entering would have been possible; generated; possibility; the appearance.
—are made possible; yajñātplugin-autotooltip__small plugin-autotooltip_bigyajñāt

from the performance of sacrifice; knowledge.
—from the performance of sacrifice; bhavatiplugin-autotooltip__small plugin-autotooltip_bigbhavati

become; becomes; becomes possible; becomes prominent; can it be; come into being; comes into being; is; is possible; it is; it so becomes; manifested, becomes; takes birth; takes place; there are; there is.
—becomes possible; parjanyaḥplugin-autotooltip__small plugin-autotooltip_bigparjanyaḥ

a cloud; rains; the clouds; the clouds in the sky; the director of rainfall; water.
—rains; yajñaḥplugin-autotooltip__small plugin-autotooltip_bigyajnah

a name of Indra; Indra; Lord Viṣṇu; Lord Viṣṇu, known as Yajña; Lord Yajña; of the name Yajñapati or Yajñamūrti; performance of yajña; performance of sacrifice; personified yajña (Lord Viṣṇu, who is known as the yajña-puruṣa); sacrifice; sacrifices; the incarnation of Lord Viṣṇu; the Lord's incarnation as Yajña; the sacrifice; Viṣṇu; worshiping; Yajña.
—performance of yajña; karmaplugin-autotooltip__small plugin-autotooltip_bigkarma

karma; according to work; act; action; actions; activities (to support the Daityas); activities; activities being dedicated to You; activities of service to You; activity; activity of life; acts; and activities; and fruitive activities; and work; another activity; by actions; by activities; by fruitive activities; by predestined resultant actions; by wonderful activities, pious activities; by work; duties; duty; fruitive action; fruitive activities; fruitive activity; fruitive desires; fruitive work; in activities; material activities; my deeds; of activities; of fruitive activities; of the activities; one's prescribed activities; pastimes; pastimes, activities; prescribed duties; prescribed duty; reaction of the past; reactionary work; story; such service to the master; the accomplishment; the act; the activities; the activity; the business; the fate of the living entity; the fruits of action; the fruits of activities; the interaction; the objective; the sacrifice; these activities; to such activities; transcendental activity; uncommon deeds; whose transcendental activities; work.
—prescribed duties; samudbhavaḥplugin-autotooltip__small plugin-autotooltip_bigsamudbhavaḥ

being born of; born of; produced.
—born of. 


All living bodies subsist on food grains, which are produced from rain. Rains are produced by performance of yajña [sacrifice], and yajña is born of prescribed duties. 


Śrīla Baladeva Vidyābhūṣaṇa, a great commentator on the Bhagavad-gītā, writes as follows: ye indrādy-aṅga-tayāvasthitaṁ yajñaṁ sarveśvaraṁ viṣṇum abhyarccya taccheṣam aśnanti tena taddeha-yāntrāṁ sampādayanti te santaḥ sarveśvarasya bhaktāḥ sarva-kilviṣair anādi-kāla-vivṛddhair ātmānubhava- pratibandhakair nikhilaiḥ pāpair vimucyante. The Supreme Lord, who is known as the yajña-puruṣaḥ, or the personal beneficiary of all sacrifices, is the master of all demigods who serve Him as the different limbs of the body serve the whole. Demigods like Indra, Candra, Varuṇa, etc., are appointed officers who manage material affairs, and the Vedas direct sacrifices to satisfy these demigods so that they may be pleased to supply air, light and water sufficiently to produce food grains. When Lord Kṛṣṇa is worshiped, the demigods, who are different limbs of the Lord, are also automatically worshiped; therefore there is no separate need to worship the demigods. For this reason, the devotees of the Lord, who are in Kṛṣṇa consciousness, offer food to Kṛṣṇa and then eat-a process which nourishes the body spiritually. By such action not only are past sinful reactions in the body vanquished, but the body becomes immunized to all contamination of material nature. When there is an epidemic disease, an antiseptic vaccine protects a person from the attack of such an epidemic. Similarly, food offered to Lord Viṣṇu and then taken by us makes us sufficiently resistant to material affection, and one who is accustomed to this practice is called a devotee of the Lord. Therefore, a person in Kṛṣṇa consciousness, who eats only food offered to Kṛṣṇa, can counteract all reactions of past material infections, which are impediments to the progress of self-realization. On the other hand, one who does not do so continues to increase the volume of sinful action, and this prepares the next body to resemble hogs and dogs, to suffer the resultant reactions of all sins. The material world is full of contaminations, and one who is immunized by accepting prasādam of the Lord (food offered to Viṣṇu) is saved from the attack, whereas one who does not do so becomes subjected to contamination. 

Food grains or vegetables are factually eatables. The human being eats different kinds of food grains, vegetables, fruits, etc., and the animals eat the refuse of the food grains and vegetables, grass, plants, etc. Human beings who are accustomed to eating meat and flesh must also depend on the production of vegetation in order to eat the animals. Therefore, ultimately, we have to depend on the production of the field and not on the production of big factories. The field production is due to sufficient rain from the sky, and such rains are controlled by demigods like Indra, sun, moon, etc., and they are all servants of the Lord. The Lord can be satisfied by sacrifices; therefore, one who cannot perform them will find himself in scarcity-that is the law of nature. Yajña, specifically the saṅkīrtana-yajña prescribed for this age, must therefore be performed to save us at least from scarcity of food supply.