Krishna says, "Amongst purifiers, I am the wind, and amongst wielders of weapons, I am Rama. Of water creatures, I am the crocodile, and of flowing rivers, I am the Jahnavi (Ganges)" (10.31).
Firstly, wind helps to clear impurities from our bodies. Blood keeps turning impure due to chemical processes and wind helps purify it through the lungs. Without this purification, life can't sustain even for a couple of minutes. Secondly, wind is the most flexible and mobile. This mobility helps to purify the environment through circulation. Thirdly, wind stands for freedom. Freedom from desires and sorrows which is the ultimate freedom (๐ข๐ค๐ ๐จ๐๐) stands for purity.
Finally, wind stands for non-attachment. It carries unpleasant odours without aversion and pleasant scents without any attachment. It drops both of them with ease in due course of time. This is nothing but ๐๐ฃ๐๐๐จ๐๐ ๐ฉ๐, beyond ๐๐๐จ๐๐ ๐ฉ๐ (attachment) and ๐ซ๐๐ง๐๐ ๐ฉ๐ (detachment). While ๐ ๐๐ง๐ฉ๐๐๐ฅ๐๐ฃ (our sense of doership) makes any ๐ ๐๐ง๐ข๐ a sin, impurity is getting attached to pleasant memories, things, people etc. and hating unpleasant ones.
These characteristics of wind help us understand another intricate concept of 'prescribed action' (๐ฃ๐๐ฎ๐๐ฉ ๐ ๐๐ง๐ข๐) which is performing the ๐ ๐๐ง๐ข๐ in hand (carrying smell) without attachment.
Krishna says HE is Rama among warriors wielding weapons. LORD Rama is considered soft but stood for values and righteousness. While the villain Ravana represents power without character, Rama is a combination of character and power. Krishna says that this combination is possible as in the case of Rama and he represents that. Power always requires anchoring in character and this is applicable even in today's scenario.
Krishna says he is Ganga among rivers. Certainly not for its size, but the river Ganga represents civilization for centuries where everyone is connected to it in one way or another.