Srila Sukadeva Gosvami continued: Lord Siva is always benevolent toward all living entities. When he saw that the living entities were very much disturbed by the poison, which was spreading everywhere, he was very compassionate. Thus he spoke to his eternal consort, Sati, as follows.
Lord Siva said: My dear Bhavani, just see how all these living entities have been placed in danger because of the poison produced from the churning of the ocean of milk. It is my duty to give protection and safety to all living entities struggling for existence. Certainly it is the duty of the master to protect his suffering dependents. People in general, being bewildered by the illusory energy of the Supreme Personality of Godhead, are always engaged in animosity toward one another. But devotees, even at the risk of their own temporary lives, try to save them. My dear gentle wife Bhavani, when one performs benevolent activities for others, the Supreme Personality of Godhead, Hari, is very pleased. And when the Lord is pleased, I am also pleased, along with all other living creatures. Therefore, let me drink this poison, for all the living entities may thus become happy because of me. m’m
Srila Sukadeva Gosvami continued: After informing Bhavani in this way, Lord Siva began to drink the poison, and Bhavani, who knew perfectly well the capabilities of Lord Siva, gave him her permission to do so. Thereafter, Lord Siva, who is dedicated to auspicious, benevolent work for humanity, compassionately took the whole quantity of poison in his palm and drank it. As if in defamation, the poison born from the ocean of milk manifested its potency by marking Lord Siva’s neck with a bluish line. That line, however, is now accepted as an ornament of the Lord. It is said that great personalities almost always accept voluntary suffering because of the suffering of people in general. This is considered the highest method of worshiping the Supreme Personality of Godhead, who is present in everyone’s heart.
Purport: Here is an explanation of how those engaged in activities for the welfare of others are very quickly recognized by the Supreme Personality of Godhead. The Lord says in Bhagavad-gita (18.68–69), ya idam paramam guhyam mad-bhaktesv abhidhasyati . . . na ca tasman manusyesu kascin me priya-krttamah: “One who preaches the message of Bhagavad-gita to My devotees is most dear to Me. No one can excel him in satisfying Me by worship.” There are different kinds of welfare activities in this material world, but the supreme welfare activity is the spreading of Krsna consciousness. Other welfare activities cannot be effective, for the laws of nature and the results of karma cannot be checked. It is by destiny, or the laws of karma, that one must suffer or enjoy. For instance, if one is given a court order, he must accept it, whether it brings suffering or profit. Similarly, everyone is under obligations to karma and it reactions. No one can change this. Therefore the sastra says:
tasyaiva hetoh prayateta kovido
na labhyate yad bhramatam upary adhah
One should endeavor for that which is never obtained by wandering up and down the universe as a result of the reactions of karma. What is that? One should endeavor to become Krsna conscious. If one tries to spread Krsna consciousness all over the world, he should be understood to be performing the best welfare activity. The Lord is automatically very pleased with him. If the Lord is pleased with him, what is left for him to achieve? If one has been recognized by the Lord, even if he does not ask the Lord for anything, the Lord, who is within everyone, supplies him whatever he wants. This is also confirmed in Bhagavad-gita (tesam nityabhiyuktanam yoga-ksemam vahamy aham [Gita 9.22]). Again, as stated here, tapyante loka-tapena sadhavah prayaso janah. The best welfare activity is raising people to the platform of Krsna consciousness, since the conditioned souls are suffering only for want of Krsna consciousness. The Lord Himself also comes to mitigate the suffering of humanity.
yada yada hi dharmasya
glanir bhavati bharata
tadatmanam srjamy aham
vinasaya ca duskrtam
sambhavami yuge yuge
“Whenever and wherever there is a decline in religious practice, O descendant of Bharata, and a predominant rise of irreligion—at that time I descend Myself. To deliver the pious and to annihilate the miscreants, as well as to reestablish the principles of religion, I advent Myself millennium after millennium.” (Gita 4.7–8) All the sastras conclude, therefore, that spreading the Krsna consciousness movement is the best welfare activity in the world. Because of the ultimate benefit this bestows upon people in general, the Lord very quickly recognizes such service performed by a devotee.