" The English term “martyr” comes from the Greek martys, “witness.” Søren Kierkegaard defines witness as “someone who directly demonstrates the truth of the doctrine he proclaims—directly, yes, partly by its being the truth within him, … partly by his volunteering his personal self and saying: See, now, if you can force me to deny this doctrine. "

― Kevin J. Vanhoozer , Faith Speaking Understanding: Performing the Drama of Doctrine