uttamaḥ puruṣhas tv anyaḥ paramātmety udāhṛitaḥ
yo loka-trayam āviśhya bibharty avyaya īśhvaraḥ  || 17||
yasmāt kṣharam atīto ’ham akṣharād api chottamaḥ
ato ’smi loke vede cha prathitaḥ puruṣhottamaḥ || 18||

My Understanding : Bhagavan Krishna resides behind the souls, guiding and overseeing all that happens. He is the ultimate reason for everything. “I am the perishable world and the imperishable soul.”