Chapter 18 · Liberation through Renunciation · Krishna said
Bhagavad Gita 18.68 — Sharing the Gita
य इदं परमं गुह्यं मद्भक्तेष्वभिधास्यति। भक्तिं मयि परां कृत्वा मामेवैष्यत्यसंशयः ॥
ya idaṃ paramaṃ guhyaṃ madbhakteṣvabhidhāsyati | bhaktiṃ mayi parāṃ kṛtvā māmevaiṣyatyasaṃśayaḥ ||
Meaning
One who, with supreme devotion to Me, shares this highest secret with My devotees will surely come to Me, without doubt.