Having just read a letter of St. Paul's
I understand his emphasis: the use
of 'must' and 'ought to' with reference
to living as a Christian in that day.
The emphasis survives to this same day:
it still remains a case of 'must' and 'ought to':
not what is done from what is known for sure,
but known for sure and that which is yet done.
What's done is that I do -- and which relieves
in continuity not ideal
Christian living, but the history's
sin that occasions continuity;
till 'must' and 'ought to' cease to relate
to the ideal, but to that I do.