The eighth chapter of the Bhagavad Gita is Akshara Brahma Yoga. In this chapter, Krishna reveals the importance of the last thought before death. If we can remember Krishna at the time of death, we will certainly attain him. Thus, it is very important to be in constant awareness of the Lord at all times, thinking of Him and chanting His names at all times. By perfectly absorbing their mind in Him through constant devotion, one can go beyond this material existence to Lord's Supreme abode.
Arjun said: O Supreme Lord, what is Brahman (Absolute Reality), what is adhyātma (the individual soul), and what is karma? What is said to be adhibhūta, and who is said to be Adhidaiva?OPEN VERSE
Who is Adhiyajña in the body and how is he the Adhiyajña? O Krishna, how are you to be known at the time of death by those of steadfast mind?OPEN VERSE
The Blessed Lord said: The Supreme Indestructible Entity is called Brahman; one’s own self is called adhyātma. Actions pertaining to the material personality of living beings, and its development are called karma, or fruitive activities.OPEN VERSE
O best of the embodied souls, the physical manifestation that is constantly changing is called adhibhūta; the universal form of God, which presides over the celestial gods in this creation, is called adhidaiva; I, who dwell in the heart of every living being, am called Adhiyajña, or the Lord of all sacrifices.OPEN VERSE
Those who relinquish the body while remembering me at the moment of death will come to me. There is certainly no doubt about this.OPEN VERSE