Krsna is the supreme creator of everything. He is andantara-stha-paramanu-cayantara-stham [Bs 5.35]. He is conscious, abhijnah, of everything.

isvarah sarva-bhutanam
hrd-dese ‘rjuna tisthati
[Bg. 18.61]

He knows everything, even within your heart, what you’re thinking, what you are planning. It cannot be concealed to Krsna. This is our foolishness, that we are doing something, concealing. You can conceal my eyes, other friend’s eyes, but you cannot conceal the eyes of Krsna. He is upadrastanumanta [Bg. 13.23]. That is explained in Bhagavad-gita. Upadrasta: He is seeing always what you are doing. You cannot play tricks with Krsna; that is not possible.

isvarah sarva-bhutanam
hrd-dese ‘rjuna tisthati
[Bg. 18.61]

So those who are anxious to become Krsna conscious, sincere devotee of Krsna, they should not try to play tricks. Krsna will know everything.

Srila Prabhupada, Talk on Bhagavad-gita 4.4 — February 12, 1974, Vrndavana