SB 10.1.22

As stated in the Brahma-saṁhitā (5.39):

rāmādi-mūrtiṣu kalā-niyamena tiṣṭhan
nānāvatāram akarod bhuvaneṣu kintu
kṛṣṇaḥ svayaṁ samabhavat paramaḥ pumān yo
govindam ādi-puruṣaṁ tam ahaṁ bhajāmi
“I worship the Supreme Personality of Godhead, Govinda, who is always situated in various incarnations such as Rāma, Nṛsiṁha and many sub-incarnations as well, but who is the original Personality of Godhead, known as Kṛṣṇa, and who incarnates personally also.”

In this verse from Śrīmad-Bhāgavatam we find the words puraiva puṁsāvadhṛto dharā-jvaraḥ. The word puṁsā refers to Kṛṣṇa, who was already aware of how the whole world was suffering because of the increase of demons. Without reference to the supreme power of the Personality of Godhead, demons assert themselves to be independent kings and presidents, and thus they create a disturbance by increasing their military power. When such disturbances are very prominent, Kṛṣṇa appears. At present also, various demoniac states all over the world are increasing their military power in many ways, and the whole situation has become distressful. Therefore Kṛṣṇa has appeared by His name, in the Hare Kṛṣṇa movement, which will certainly diminish the burden of the world. Philosophers, religionists, and people in general must take to this movement very seriously, for man-made plans and devices will not help bring peace on earth. The transcendental sound Hare Kṛṣṇa is not different from the person Kṛṣṇa.

nāma cintāmaṇiḥ kṛṣṇaś
caitanya-rasa-vigrahaḥ
pūrṇaḥ śuddho nitya-mukto
’bhinnatvān nāma-nāminoḥ
(Padma Purāṇa)

There is no difference between the sound Hare Kṛṣṇa and Kṛṣṇa the person.