The nature of Sun is to shed light, that of the water is to flow and of the air to dry up . These are the 'vows' of some of the external gods which Indra helps execute.
STRIVE to move away from Untruth towards Truth; attempt to acquire knowledge of yourself and of the origin of all selves and thus shed your fundamental ignorance.
Follow 'this' path... it is easily accessible and the cart can move freely on it.... treading on which the brave ones do not get vanquished and which also provides better prospects for earning wealth.