Bhagavad Gita · Chapter 9: The Royal Knowledge and Royal Secret

Bhagavad Gita 9.14

satataṃ kīrtayanto māṃ yatantaśca dṛḍhavratāḥ | namasyantaśca māṃ bhaktyā nityayuktā upāsate ||

Always singing my praises, striving with firm vows, and bowing to me with devotion, they worship me, always disciplined.

Modern context

Devotion has three expressions here: singing, striving and bowing. Singing is joy expressed outwardly. Striving is effort with firm commitments. Bowing is humility. Together they cover the voice, the will and the body. Devotion that is only a feeling tends to fade; devotion that is expressed in all three becomes part of how a person lives.