Thus the knowledge (jñāna) declared to you by Me, is more secret than the secret. Having reflected on this completely, do as you wish.
This knowledge I have taught is more arcane than any mystery— consider it completely, then act as you choose.
(63) Of all the mysteries the most mysterious, this wisdom have I told you; ponder it in all its amplitude, then do whatever you will.
18.63 To you has been imparted by Me this knowledge [Derived in the instrumental sense of 'means of knowledge'; i.e. the scripture Gītā.] which is more secret than any secret. Pondering over this as a whole, do as you like.
18.63 Thus the knowledge, the mystery of mysteries, has been declared to you be Me. Reflecting on it fully, do what you will.
18.63 Thus has wisdom, more secret than secrecy itself, been declared unto thee by Me; having reflected over it fully, then act as thou wishest.