JMNT(i)
19 For you see, JUST AS through the unwillingness to listen, or to pay attention, resulting in disobedience (or: the erroneous hearing leading to disobedience)
of the one person THE MANY (= the mass of humanity)
were rendered (established; constituted; placed down and made to be)
sinners (failures; ones who diverge and miss the target),
THUS – in the same way – ALSO through the submissive listening and paying attention resulting in obedience of the One, THE MANY (= the mass of humanity)
will continue being rendered (placed down and established as; constituted; appointed to be)
just ones (folks who have been rightwised; people in the Way pointed out; righteous ones who are free from guilt; fair, equitable, rightly-turned folks in right, covenant relationships).
20 Now Law and custom at one point entered in alongside (or: intruded into the situation by the side)
to the end that the effect of the fall to the side (or: so that the result of the offense and the stumbling aside)
would increase to be more than enough (should greatly abound and become more intense).
But where the Sin (the failure; the divergence and missing of the target)
increases (or: abounded to be more than enough; becomes more intense)
THE GRACE ("the act producing happiness, which is granted as a favor" – Jim Coram)
at once super-exceeds (or: hyper-exceeded)
over and above, surrounding to excessive abundance and overflow,
21 to the end that JUST AS the Sin (the failure; the erroneous act; the deviation and digression which issued in missing the goal)
at one point reigned (or: ruled as king; exercised sovereign sway)
within, and in union with, the Death, THUS SO (or: in THIS way)
also the Grace and joyous favor would reign (should rule as king; can exercise sovereign sway)
through rightwisedness (or: by means of rightly-turned existence with equity in [covenantal] solidarity of right relationships which accord to the Way; through a Justice-[expression])
[which leads] into Life which belongs to, pertains to and has the characteristics of the Age (or: eonian life; Life of the Age [of Messiah]; a life for the ages) –
through Jesus Christ, our Owner (Lord; Master).