By righteousness is here meant universal virtue. But observe the superior power of grace, in that He requires of His disciples who were yet uninstructed to be better than those who were masters unto the Old Testament. Thus He does not call the Scribes and Pharisees unrighteous, but speaks of “their righteousness.” And see how ever herein He confirms the Old Testament that He compares it with the New, for the greater and the less are always of the same kind.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).