24. righteous—one apparently such; as in Mt 9:13, "I came not to call the righteous," &c., that is, those who fancy themselves righteous. Those alone are true saints who by the grace of God persevere (Mt 24:13; 1Co 10:12; Joh 10:28, 29).
turneth away from … righteousness—an utter apostasy; not like the exceptional offenses of the godly through infirmity or heedlessness, which they afterwards mourn over and repent of.
not be mentioned—not be taken into account so as to save them.
his trespass—utter apostasy.