Although Kṛṣṇa is present everywhere, as it is stated here, advaitam acyutam anādim ananta-rūpam ādyam purāṇa-puruṣam (Bs. 5.33).
Ādyam means the original personality. Kṛṣṇa is the original father. You will find in the Bhagavad-gītā, sarva-yoniṣu kaunteya sambhavanti mūrtayo yāḥ (BG 14.4) "In every species of life, all types of forms of life, their mother is this material nature, and I am the seed-giving father." The father is the seed-giving agent, and mother gives the body.
So this material nature is our mother. According to Vedic conception, the material nature, mother, is worshiped. There are seven kinds of mother, not one mother.
- ādau-mātā guroḥ patnī
- brāhmaṇī rāja-patnikā
- dhenur dhātrī tathā pṛthvī
- saptaitā mātaraḥ smṛtāḥ
- (Nīti Śāstra)
Ādau-mātā, real mother, from whom I have taken birth, ādau-mātā. Guroḥ patnī, the wife of spiritual master. Ādau-mātā guroḥ patnī brāhmaṇī. Brāhmaṇī, the wife of a brahmin, learned scholar. Ādau-mātā guroḥ patnī. Why learned scholar? He is also guru, because from learned scholar you learn so many things, and guru teaches us so many things. Therefore he is father, and his wife is mother.
Ādau-mātā guroḥ patnī brāhmaṇī rāja-patnikā. Rāja-patnikā means a queen. And now there is no king, queen, but formerly there was king and queen.