Chapter 16 · Divine and Demonic Natures · Krishna said
Bhagavad Gita 16.8 — Denial of God
असत्यमप्रतिष्ठं ते जगदाहुरनीश्वरम्। अपरस्परसम्भूतं किमन्यत्कामहैतुकम् ॥
asatyamapratiṣṭhaṃ te jagadāhuranīśvaram | aparasparasambhūtaṃ kimanyatkāmahaitukam ||
Meaning
They say the world has no truth, no foundation and no God; that it arose only from the union of male and female, with desire as its only cause.