Gita Chapter 10

Chapter 10

Here Lord is expanding on the concept of His Omnipresence that He briefly refered to in the previous chapter.  In short He is saying that He is in everything that was, is and will be.
Arjuna wants to know how can he contemplate on the form of Lord.  Here Lord gives him so many ways to contemplate on Him.  Literally Lord can be contemplated upon by contemplating on any of his creations, since there is no difference between Him and His creation.  Lord gives Arjuna so many examples.  Examples from rivers, mountains, warriors, rishis, planets, ocean, devi devtas, mantras, various forms of Yajnas, Chhandas, trees,  weapons,  in various creatures that live in water, earth and air, various bhavas, qualities, all living and non living entities and so forth. 

all these have been created by the Lord and He is in all of them and by contemplating on any of them one is really contemplating on Him alone.

 As you read this chapter and try to understand it you will  get a good idea of Hindu scriptures and mythology.  Because as He says, for example that He is Shankara among eleven Rudras, youwill have to look up that information and so on so forth.  He is Bhrigu rishi among rishis and Japayagna among various forms of Yajnas.  etc.

couple of other important messages from this chapter:

Only Lord can describe what He is: 

No one else is qualified to even come close to say what Lord is and what His manifestations and qualities are.  And here in this chapter Lord has graced us by giving only a brief glimpse of His Vibhutis or divine qualities.  all the learned sages, rishis etc can not describe fully what Lord is because Lord has been there before they were and Lord is the one who created them.

Who is qualified to know of these:

Those who have their mind only in Him
Those who constantly remember Him
Those who have purified their Antahkaran

when one shows these qualifications than Lord will light the lamp of  knowledge within and remove the darkness of ignorance.  Than devotee is graced with blemishless Bhakti or devotion and starts to  Him in everything in this creation.  As these bhaktas continuously engage in His worship, than Lord grants them Tatvajnana.  ( Experientially realizing the ultimate reality ), once they have reached this state they reunite with The Lord.