Commentaries:
Jamieson, Fausset, and Brown
The expectation of a new revelation is not to make you less careful in walking according to whatever degree of knowledge of divine things and perfection you have already attained. God makes further revelations to those who walk up to the revelations they already have (Hosea 6:3).
rule, let us mind the same thing—omitted in the oldest manuscripts. Perhaps partly inserted from Galatians 6:16, and Philippians 2:2. Translate then, "Whereunto we have attained, let us walk on (a military term, march in order) in the same (the measure of knowledge already attained)."
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