We faint not (ουκ εγκακουμεν). Present active indicative of εγκακεω, late verb (εν, κακος) to behave badly in, to give in to evil, to lose courage. In Symmachus (LXX), Polybius, and papyri. It is the faint-hearted coward. Paul speaks of himself (literary plural). Can he not speak for all of us?