अच्छेद्योऽयमदाह्योऽयमक्लेद्योऽशोष्य एव च ।
नित्यः सर्वगतः स्थाणुरचलोऽयं सनातनः ।। २-२४ ।।

अव्यक्तोऽयमचिन्त्योऽयमविकार्योऽयमुच्यते ।
तस्मादेवं विदित्वैनं नानुशोचितुमर्हसि ।। २-२५ ।।

acchedyo’yam-adāhyo’yam akledyo’śoṣya eva ca |
nityaḥ sarva-gataḥ sthāṇur-acalo’yaṁ sanātanaḥ || 2.24 ||

avyakto’yam acintyo’yam-avikāryo’yam-ucyate |
tasmād-evaṁ viditvainaṁ nānuśocitum-arhasi || 2.25 ||

2.24 Uncuttable, unburnable, unwettable, undriable, this inner presence, the Soul, is eternal, everywhere present, unshakable, unmoving and ever prevailing.

Note: The whole world is but panchabhootas. Leave the space, as it is actionless, not involving in any activities. The rest four cannot touch or affect the Soul, the substratum of all. In other words, nothing from the world, creation, can affect the Imperishable soul the least. 

2.25 This is said to be indistinct, unthinkable, changeless. Knowing this to be so, you do not deserve to grieve. Note: Krishna points the truth, only to redress Arjuna’s grief, caused by death, killing. The entire dialogue is focussed to remove grief and imbue stability and poise in Arjuna by spiritual enlightenment.