8. show yourselves men—Renounce the childishness of idolatry as shown in what precedes (1Co 14:20; 16:13; Eph 4:14). In order to be manly we must be godly; for man was made "in the image of God," and only rises to his true dignity when joined to God; virtue is derived from the Latin vir, "a man."
bring … to mind—rather, "lay it to heart."
transgressors—addressed to the idolaters among the Jews.