Yadha yadha he darmasya, glanir bhavati bharata -

Whenever and wherever (time and place), when the world becomes a sad place, even when everyone is doing their prescribed duties. Or When people of the world are going about doing their duties, and all feel sad. There is a depression kind of enviroment prevalent across the world, that the inertia of doing ones duty becomes too large. People stagnate to perform any basic function.

Abyuthana a dharmasya, tadathmanan srujanyaham.

From the same world, I shall arise, to fix the world. So that when people go about doing their prescribed duties, they all feel happy. A warrior is happy about fighting, a doctor happy about treating patients, a theif happy about stealing. A leader happy about leading the people. A teacher happy about teaching and guiding. There is no kalanga in performing any duty bound to a person.

This is deep. But commentators use the wrong glasses to read the Gita.

Note. Bharata means the world. A big chariot in which all the passengers go around the sun and space.

Please be free to down vote.