One verse

Srimad Bhagavatam 6.9.38

6.9.38

स एव हि पुन: सर्ववस्तुनि वस्तुस्वरूप: सर्वेश्वर: सकलजगत्कारणकारणभूत: सर्व प्रत्यगात्मत्वात् सर्वगुणाभासोपलक्षित एक एव पर्यवशेषित: ॥ ३८ ॥

sa eva hi punah sarva-vastuni vastu-svarupah sarvesvarah sakala-jagat-karana-karana-bhutah sarva-pratyag-atmatvat sarva-gunabhasopalaksita eka eva paryavasesitah.

sah
He (the Supreme Personality of Godhead)
eva
indeed
hi
certainly
punah
again
sarva-vastuni
in everything, material and spiritual
vastu-svarupah
the substance
sarva-isvarah
the controller of everything
sakala-jagat
of the whole universe
karana
of the causes
karana-bhutah
existing as the cause
sarva-pratyak-atmatvat
because of being the Supersoul of every living being, or being present in everything, even the atom
sarva-guna
of all the effects of the material modes of nature (such as intelligence and the senses)
abhasa
by the manifestations
upalaksitah
perceived
ekah
alone
eva
indeed
paryavasesitah
left remaining

With deliberation, one will see that the Supreme Soul, although manifested in different ways, is actually the basic principle of everything. The total material energy is the cause of the material manifestation, but the material energy is caused by Him. Therefore He is the cause of all causes, the manifester of intelligence and the senses. He is perceived as the Supersoul of everything. Without Him, everything would be dead. You, as that Supersoul, the supreme controller, are the only one remaining.