Tertullian

John, in fact, exhorts us to lay down our lives even for our brethren, affirming that there is no fear in love: "For perfect love casteth out fear, since fear has punishment; and he who fears is not perfect in love." What fear would it be better to understand (as here meant), than that which gives rise to denial? What love does he assert to be perfect, but that which puts fear to flight, and gives courage to confess? What penalty will he appoint as the punishment of fear, but that which he who denies is about to pay, who has to be slain, body and soul, in hell? And if he teaches that we must die for the brethren, how much more for the Lord,-he being sufficiently prepared, by his own Revelation too, forgiving such advice! For indeed the Spirit had sent the injunction to the angel of the church in Smyrna: "Behold, the devil shall cast some of you into prison, that ye may be tried ten days.