“Men who since conversion have betrayed great feebleness of mind and are readily led to embrace strange doctrines, or to fall into evil company and gross sin, I never can find it in my heart to encourage to enter the ministry, let their professions be what they may. Let them, if truly penitent, keep in the rear ranks. Unstable as water they will not excel” (Spurgeon, Lectures to My Students, p. 33-34).