Jamieson, Fausset and Brown on 1 Peter 4:15

15. But--Greek, "For." "Reproached in the name of Christ" I say (1Pe 4:14), "FOR let none," &c.

as ... as ... as ... as--the "as" twice in italics is not in the Greek. The second Greek, "as," distinguishes the class "busybody in other men's matters," from the previous class of delinquents. Christians, from mistaken zeal, under the plea of faithfulness, might readily step out of their own calling and make themselves judges of the acts of unbelievers. Literally, "a bishop in what is (not his own, but) another's" province; an allusion to the existing bishops or overseers of the Church; a self-constituted bishop in others' concerns.