Synonyms:

atha–if, however; ca–also; enam–this soul; nitya-jatam–always born; nityam–forever; va–either; manyase–so think; mrtam–dead; tatha api–still; tvam–you; maha-baho–O mighty-armed one; na–never; enam–about the soul; socitum–to lament; arhasi–deserve.

Translation:

If, however, you think that the soul is perpetually born and always dies, still you still have no reason to lament, O mighty-armed.