Explanation
Lord Krishna explains here that Even if Arjuna doesn’t believe that the eternal essence is imperishable, it’s fine; but if he believes that the eternal essence(soul), which is present in the human body, passes through birth and death with the body, if he understands this even then there is no reason for him to be sorrowful.
Verse & What We Can Learn
If we believe that the soul is immortal, or if we believe that every time the body perishes the soul takes a new body and (‘we’ are not the soul /divine essence, not the body once we understand this) in either case there is no reason to be sorrowful.
In the coming up verse, Lord Shri Krishna tells Arjuna the truth about birth and death.
Let’s learn to live with “The Gita” via Meditation Affinity…