This exerpt is from The Letter of the Churches of Vienna and Lugdunum to the Churches of Asia and Phyrgia (written around 180 A.D.).

"Sanctus also nobly endured all the excessive and superhuman16 tortures which man could possibly devise against him; for the wicked hoped, on account of the continuance and greatness of the tortures, to hear him confess some of the unlawful practices. But he opposed them with such firmness that he did not tell them even his own name, nor that of his nation or city, nor if he were slave or free; but in answer to all these questions, he said in Latin, `I am a Christian.' This was the confession he made repeatedly, instead of giving his name, his city, his race, and indeed in reply to every question that was put to him; and other language the heathens heard not from him. Hence arose in the minds of the governor and the torturers a determined resolution to subdue him; so that, when every other means failed, they at last fixed red-hot plates of brass to the most delicate parts of his body. And these indeed were burned, but he himself remained inflexible and unyielding, firm in his confession, being bedewed and strengthened by the heavenly fountain of the water of life which issues from the belly of Christ.17 But his body bore witness to what had happened: for it was all wounds and weals, shrunk and torn up, and had lost externally the human shape. In him Christ suffering wrought great wonders, destroying the adversary, and showing for an example to the rest that there is nothing fearful where there is the Father's love, and nothing painful where there is Christ's glory. For the wicked after some days again tortured the Witness, thinking that, since his body was swollen and inflamed, if they were to apply the same tortures they would gain the victory over him, especially since the parts of his body could not bear to be touched by the hand, or that he would die in consequence of the tortures, and thus inspire the rest with fear. Yet not only did no such occurrence take place in regard to him, but even, contrary to every expectation of man, his body unbent itself and became erect in the midst of the subsequent tortures, and resumed its former appearance and the use of its limbs, so that the second torture turned out through the grace of Christ a cure, not an affliction.

I am sure that many of you have read the Martyrdom of Polycarp (written around 150 A.D.). I love the part where he is brought into the arena (chapter 9):

Now when Polycarp entered into the arena there came a voice from heaven: "Be strong, Polycarp, and play the man." And no one saw the speaker, but our friends who were there heard the voice. And next he was brought forward, and there was a great uproar of those who heard that Polycarp had been arrested. Therefore when he was brought forward the Pro-Consul asked him if he were Polycarp, and when he admitted it he tried to persuade him to deny, saying: "Respect your age," and so forth, as they are accustomed to say: "Swear by the genius of Caesar, repent, say: `Away with the Atheists'"; but Polycarp, with a stern countenance looked on all the crowd of lawless heathen in the arena, and waving his hand at them, he groaned and looked up to heaven and said: "Away with the Atheists." But when the Pro-Consul pressed him and said: "Take the oath and I let you go, revile Christ," Polycarp said: "For eighty and six years have I been his servant, and he has done me no wrong, and how can I blaspheme my King who saved me?"

Everett Ferguson offers this comment on martyrdom in the early church:

"Martyrdom was an expression of God's grace, and the person who became a martyr was chosen by God. This viewpoint illustrates how far removed the idea of martyrdom is from many modern believers. For most today this is an outcome gratly to be feared and therefore avoided; for the early church the martyr was the ideal of the Christian life."*

*Early Christians Speak: Faith and Life in the First Three Centuries, vol. 2 [ISBN 0891120467] (Abilene, TX: ACU Press, 2002), 210.