The Greek verb antikathistemi (ἀντικαθίστημι) means to set in opposition against, to stand against, to resist, combining anti (against) and kathistemi (to set, appoint). It appears once in Hebrews 12:4 in a call to active resistance against sin.
Hebrews 12:4 reads: "In your struggle against sin, you have not yet resisted to the point of shedding your blood." Antikathistemi connotes deliberate positional resistance — taking a stand against a force seeking to overcome you. The author compares the readers' trials with those of martyrs and of Jesus himself, who "endured the cross, despising the shame." The call is not to passive suffering but to active, courageous opposition against sin. Sustained faith is not passive endurance but militant perseverance.