Krsna is the fierce controller even of fear itself - SB 10.13.13

Expressions researched:
"the fierce controller even of fear itself"

Srimad-Bhagavatam

SB Canto 10.1 to 10.13

When Kṛṣṇa saw that His friends the cowherd boys were frightened, He, the fierce controller even of fear itself, said, just to mitigate their fear, "My dear friends, do not stop eating. I shall bring your calves back to this spot by personally going after them Myself."

SB 10.13.13, Translation and Purport

When Kṛṣṇa saw that His friends the cowherd boys were frightened, He, the fierce controller even of fear itself, said, just to mitigate their fear, "My dear friends, do not stop eating. I shall bring your calves back to this spot by personally going after them Myself."

In the presence of Kṛṣṇa's friendship, a devotee cannot have any fear. Kṛṣṇa is the supreme controller, the controller of even death, which is supposed to be the ultimate fear in this material world. Bhayaṁ dvitīyābhiniveśataḥ syāt (SB 11.2.37). This fear arises because of lack of Kṛṣṇa consciousness; otherwise there cannot be any fear. For one who has taken shelter of the lotus feet of Kṛṣṇa, this material world of fear becomes hardly dangerous at all.

bhavāmbudhir vatsa-padaṁ paraṁ padaṁ

padaṁ padaṁ yad vipadāṁ na teṣām

Bhavāmbudhiḥ, the material ocean of fear, becomes very easy to cross by the mercy of the supreme controller. This material world, in which there is fear and danger at every step (padaṁ padaṁ yad vipadām), is not meant for those who have taken shelter at Kṛṣṇa's lotus feet. Such persons are delivered from this fearful world.

samāśritā ye pada-pallava-plavaṁ

mahat-padaṁ puṇya-yaśo murāreḥ

bhavāmbudhir vatsa-padaṁ paraṁ padaṁ

padaṁ padaṁ yad vipadāṁ na teṣām

(SB 10.14.58)

Everyone, therefore, should take shelter of the Supreme Person, who is the source of fearlessness, and thus be secure.