JMNT(i)
33 So Jesus, being turned about and seeing (or: looking at; perceiving) His disciples, graciously and respectfully gave instructive (or: corrective) admonition to Peter and says, "Be habitually bringing the things pertaining to the adversary under control behind Me (or: Be continually leading under that which is adversarial [to a place] behind Me; or: Be gone, under [My] authority, and continue withdrawing behind Me [= Move out of My way], O [My] opponent {or: satan}), because you continue not having a frame of mind which is disposed to the things of God, nor are you habitually directing your intellect to the issues which have their source in God, but to the contrary, [your frame of mind is disposed to and your intellect is applied to] the things pertaining to humanity (or: which belong to and have their source in people)."
34 Then, upon calling the crowd – together with His disciples – toward Himself, He said to them, "If anyone continues purposing (intending; willing) to come behind (or: after) Me, let him once for all completely renounce (deny; disown; = say "No!" to) himself and pick up his cross (or: torture and death stake), and [thus] let him be continuously (habitually; progressively) following (coming after and accompanying) Me.
35 "For you see, whosoever may continue purposing (intending; willing) to save (deliver; rescue) his soul (or: the soul-life pertaining and having its source in himself; or: the soul which is himself; his inner life) will progressively destroy and lose it (or: her). Yet whoever destroys his soul (or: soul-life; = the inner life of the false self) on account of Me and for the sake of the good news (the message of ease, wellness and goodness) will progressively deliver (rescue; save) it (or: will continue restoring her to health, wholeness and her original state and condition).
36 "For what continues benefiting a person (or: progressively augments or repeatedly brings help or profit to a man) to gain (acquire possession of) the whole world (ordered system of culture, religion, government or economy; universe) and to undergo forfeiture of his soul (or: to receive damage or detriment to his soul-life or the soul which is him)?
37 "For what can (would; could; should; [other MSS: will]) a person (a human) give as a price paid in exchange for and equivalent to his soul (or: his soul-life; the soul which is himself)?"
38 "Furthermore, whosoever may be ashamed of or embarrassed because of Me and My messages (Words; Thoughts; Ideas) within the midst of this adulterous and erring (failing; mis-shooting; sinful; deviating) generation, the Son of the Man (or: the son of mankind; the Human Son) will also continue being ashamed of and embarrassed because of him – whenever (at the time that) He may come within the midst of His Father's glory (or: in a manifestation which calls forth praise for His Father) along with the set-apart agents (or: holy messengers; sacred folks with the message)."