Chapter 10 · The Divine Glories · Krishna said
Bhagavad Gita 10.20 — The Self in every heart
अहमात्मा गुडाकेश सर्वभूताशयस्थितः। अहमादिश्च मध्यं च भूतानामन्त एव च ॥
ahamātmā guḍākeśa sarvabhūtāśayasthitaḥ | ahamādiśca madhyaṃ ca bhūtānāmanta eva ca ||
Meaning
Arjuna, I am the Self living in the heart of every being. I am the beginning, the middle and the end of all beings.
In today's life
Treating every person with respect becomes natural when you remember that God lives in their heart too.