28 And oh, mockery of a deceived fraternity! Oh, vain deception of miserable and senseless mourners! Oh, ineffectual and profitless tradition of heretical institution! To exhort to the repentance of atonement, and to take away the healing from the atonement; to say to our brethren, “Mourn and shed tears, and groan day and night, and labour largely and frequently for the washing away and cleansing of your sin; but, after all these things, you shall die without the pale of the Church.
Whatsoever things are necessary to peace, you shall do, but none of that peace which you seek shall you receive!” Who would not perish at once? Who would not fall away, from very desperation? Who would not turn away his mind from all design of lamentation? Do you think that the husbandman could labour if you should say, “Till the field with all the skill of husbandry, diligently persevere in its cultivation; but you shall reap no harvest, you shall press no vintage, you shall receive no fruits of your olive-yard, you shall gather no apples from the trees;”or if, urging upon any one the possession and use of ships, you were to say, “Purchase, my brother, material from excellent woods; inweave your keel with the strongest and chosen oak; labour on the rudder, the ropes, the sails, that the ship may be constructed and fitted; but when you have done this, you shall never behold the result from its doings and its voyages?”
Source: The Epistles of Cyprian (New Advent)