श्री भगवानुवाच भूय एव महाबाहो श्रृणु मे परमं वचः। यत्तेऽहं प्रीयमाणाय वक्ष्यामि हितकाम्यया ॥

bhūya eva mahā-bāho śhṛiṇu me paramaṁ vachaḥ yatte ’haṁ prīyamāṇāya vakṣhyāmi hita-kāmyayā

Again, O mighty-armed, hear thou My supreme word, that, desiring thy welfare, I will declare to thee who art beloved.

In plain words: Krishna tells Arjuna to listen again to his highest teaching. He says he is sharing it because Arjuna is dear to him and he wants what is best for him.