Bhagavad Gita Verse 4, Chapter 17

yajante saattvikaa devaanyaksharakshaamsi raajasaahaa |
pretaanbhootaganaamshchaanye yajante taamasaa janaahaa || 4 ||
 
Saatvic individuals worship deities, raajasic individuals worship the yakshas and the raakshasas, others, taamasic individuals, the pretas and band of bhootas.
 
yajante : worship
saattvikaa : saatvic individuals
devaan : deities
yaksharakshaamsi : yakshas and raakshasas
raajasaahaa : raajasic individuals
pretaan : pretas
bhootaganaam : band of bhootas
cha : and
anye : others
yajante : worship
taamasaa : taamasic
janaahaa : individuals
 
Shri Krishna says that people who have faith can be placed in three categories. Those that worship deities such as Lord Ganesha, Lord Shiva and so on are saatvic. Those that worship materialistic spirits or yakshas such as Kubera the lord of wealth are raajasic. Those that worship ghosts and demons are taamasic. Hearing this, we may say that we only worship deities. We never worship anything else. Therefore, we may conclude that we are highly saatvic individuals.
 
But as we have seen in karma yoga, the attitude with which we perform an action is equally important as the action itself. Imagine that three people visit the same temple at the same time and pray to the same deity. One person may pray because he wants his daughter to get married. One may pray to knock off his business competitor. Another may pray so that he attains liberation in this life. Outwardly, they may seem to be doing the same action, but there is a world of difference in their attitude. This difference in attitude is symbolically conveyed in the shloka using terms such as ghosts and demons.
 
So, analyzing our actions is not as easy as observing what we do. We also need to note our attitude behind our actions. As we saw earlier, our nature or svabhaava determines our attitude and our actions. To uncover the texture of our faith, we first need to uncover our attitudes and motivations, which requires a high degree of awareness. To get better and doing so, Shri Krishna covers a gamut of actions in this chapter so that we can practice observing our attitude as well as our actions, observe what we do and why we do it.