The Martyrdom of Cyprian of Carthage
Since the Lord warns us, saying, “Ye are the salt of the earth,” and since He bids us to be simple to harmlessness, and yet with our simplicity to be prudent, then what else, beloved brethren, befits us than to use foresight and watching with an anxious heart, both to perceive and to beware of the wiles of the crafty foe; that we, who have put on Christ the wisdom of God the Father, may not seem to be wanting in wisdom in the matter of providing for our salvation?
For it is not persecution alone that is to be feared; nor those things which advance by open attack to overwhelm and cast down the servants of God. Caution is more easy where danger is manifest, and the mind is prepared beforehand for the contest when the adversary avows himself. The enemy is more to be feared and to be guarded against, when he creeps on us secretly; when, deceiving by the appearance of peace, he steals forward by hidden approaches.