Thus by me is imparted to you the Knowledge, which is a secret greater than all other secrets. Discreetly reflecting on this fully, act as you wish.
Krishna earlier delineated various thought processes, values and disciplines. He now concludes with some summary statements, lifting the mind from the labyrinth of multiple considerations and focussing on the Self alone!
In fact, this is a very safe process of turning within, eschewing all thoughts of sin and virtue, good and bad, etc. It is the Lord, dwelling within, who motivates everyone to think, speak and act. Turn to Him, the singular inner source, for all correction, elevation and fulfilment.
In doing so, no feeling, attitude or goal should hinder. This inner surrender, refuge and reliance alone will remove all distress. Have no doubt or deflection.
Krishna then asks Arjuna to critically evaluate what he heard, and decide what he should do. As an instructor, he gives no order or command. This is the best and most laudable note of Sanatana Dharma, Indian spiritual philosophy, which distinguishes itself in every way!