On the Lapsed.
Argument.— Having Enlarged Upon the Unlooked-for Peace of the Church, and the Constancy of the Confessors and Those Who Had Stood Fast in the Faith; And Then with Extreme Grief Having Pointed to the Downfall of the Lapsed, and Unfolded the Causes of the Bygone Persecution, Namely, the Neglect of Discipline, and the Sins of the Faithful; Our Author Severely Reproaches the Lapsed, That, at the Very First Words of the Enemy Threatening Them, They Had Sacrificed to Idols, and Had Not Rather Withdrawn, According to Christ's Counsel. Lastly, He Warns His Readers to Avoid the Novatians, Confuting Their Heresy with Many Scriptures.
Source: The Treatises of Cyprian (New Advent)