Adam Clarke on Philippians 3:16

Whereto we have already attained - Let us not lose that part of the race which we have already run, let us walk by the same rule - let us keep the white line continually in view, let us mind the same thing, always considering the glorious prize which is held out by God through Christ Jesus to animate and encourage us.

The MSS., versions and fathers of the Alexandrian recension or edition, and which are supposed by Griesbach and others to contain the purest text, omit the words κανονι, το αυτο φρονειν, and read the verse thus: Whereunto we have already attained let us walk; or, according to what we have already attained, let us regulate our life, There is so much disagreement about the above words in the MSS., etc., that most critics consider them as a sort of gloss, which never made an original part of the text. Dr. White says, Certissime delenda; "Most certainly they should be obliterated."