Transliteration
sādhibhūtādhidaivaṃ māṃ sādhi yajñāṃ ca ye viduḥ |
prayāṇa kāle’pi ca māṃ te vidur yukta cetasaḥ || 30 ||
Translation
Those who know Me as the Supreme Lord, as the governing principle of the material manifestation(Adhibhuta), who know Me as the one underlying all the deties(Adhidaiva) and as the one sustaining all yajnas(Adhiyajna), can, with steadfast mind, understand and know Me even at the time of death.
Purport
This is the last Shloka of this chapter but gives one of the most important concepts, which is the subject of the next chapter.
The above Shloka explain the three aspects of Bhagvan Shri Krishna.
1. Adhidbhuta:
The Governing Principles of Material world. This is the phenomenon or the potency of Bhagvan Krishna by which the whole universe has been manifested in different layers and steps. The Nasdiya Sukta of Vedas(10.129 ) mentions this as the process of creation. When in the beginning, Lord Vishnu expanded his potency.
2. Adhidaiva:
The underlying source of all deities. This is the second aspect of the divine potency of Bhagvan Shri Krishna, Through his potency, he created a hierarchy of living beings for the smooth processing. The purpose has been described in Ch3, 4 of Shrimad Bhagvad Gita.
3. AdhiYajna:
The master of all Yajna. As described in an earlier chapter, Yajna is the underlying principle of all actions in the universe.
In the above Shloka, Bhagavan Shri Krishna explains He is the mater of all three aspects of the universe. Human has to know this fact and realize it. Once human knows these facts, his devotion is automatically driven to Bhagvan Shri Krishna God.