In this concluding section of the Gita, Lord Krishna, being the greatest teacher checks with His student, Arjuna on how Arjuna is receiving and processing the message of the Gita.
Krishna asks Arjuna (pārtha) whether (kaccid) this [message] (etac) was heard (chrutaṁ) by him (tvayā) with a single-pointed (ekāgreṇa) consciousness (cetasā) and whether (kaccid) his (te) ignorance (ajñāna) and illusion (sammohaḥ) were now dispelled (praṇaṣṭas). (BG 18.72) In other words, we can also expect our illusion and ignorance to be dispelled after attentively studying the Gita.
Arjuna acknowledges that his illusion (mohaḥ) is destroyed (naṣṭo) and he has regained (labdhā) his (mayā) memory (smṛtir) by Krishna’s grace (tvat-prasādān). He is firmly situated (sthito ’smi) free of doubt (gata-sandehaḥ). He is ready to execute (kariṣye) Krishna’s (tava) words (vacanaṁ). (BG 18.73) Therefore, the success of receiving the Bhagavad Gita in our life is determined by our inclination to execute Krishna’s words.