By always doing all activities with wholesome reliance on Me (the Supreme), one attains by My grace, the eternal, imperishable Abode.
Krishna began answering Arjuna’s questions on sannyāsa and tyāga, but covered various concepts, explaining the three kinds of action, actor, knowledge, will, etc. He then discussed the fourfold classification (varna), which sustains the society. One can, however, follow whatever act one is given to naturally or dictated by occasion or circumstances, but with wholesome spiritual attunement. That will then lead to perfection, thence to the transcendental note of devotional fullness and ecstasy. Krishna now makes some sovereign propositions, each of which can bestow fulfilment.
As the first of these, Krishna says one should do all his activities, but taking refuge totally in the Supreme. If he does so, he will, by the grace of the Supreme, attain the perpetual spiritual abode, earmarked for human life!
In this, all plural evaluations about karma are dropped, as everything inheres in and is for the Supreme. This overwhelming attitude divinizes everything!