No man putteth new wine into old bottles - John Bunyan

"a man in or with a legal spirit should not, nay,
cannot, do any conditional command of the
Gospel acceptably, as to his eternal state,
because he doth it in an old-covenant spirit.
“No man putteth new wine into old bottles”;
but new wine must have new bottles, a Gospel
command must have a Gospel spirit, or else the
wine will break the bottles, or the principle will
break the command." -John Bunyan