This verb means to endure patiently, hold out, or persevere despite difficulty. In Hebrews 11:27, it describes Moses: 'He persevered (ekarterēsen) as though he saw him who is invisible.' The word conveys steadfast endurance rooted in focused attention—Moses endured Egypt's hostility and the wilderness's hardships by fixing his gaze on the invisible God. Kartereō implies not passive resignation but active, resolute perseverance, remaining faithful when circumstances would justify quitting.