Jamieson, Fausset & Brown

Concerning--Translate as before and after, "As touching Zeal" (compare Act 22:3; Act 26:9). blameless--Greek, "having become blameless" as to ceremonial righteousness: having attained in the eyes of man blameless legal perfection. As to the holiness before God, which is the inner and truest spirit of the law, and which flows from "the righteousness of God by faith," he on the contrary declares (Phi 3:12-14) that he has not attained perfection.