Justin Martyr, First Apology 19

Consider this: what could seem more incredible than the claim that, while we did not yet exist in bodily form, a tiny drop of human seed could produce bones, sinews, and flesh shaped exactly as we see them? Suppose someone showed you that seed and a drawing of the fully formed body, insisting that the one comes from the other. Would you have believed it before actually watching it happen? No one would dare deny it. Yet you refuse to believe in the resurrection simply because you have not yet seen a dead person rise. But just as you would not have believed at the start that such bodies could arise from a mere drop, even though you now watch it happen every day, so you should reason that it is not impossible for human bodies, once dissolved and scattered into the earth like seed, to rise again at God's command and put on incorruption. What kind of divine power do those people attribute to God who say that each thing can only return to the elements it came from, and that nothing else is possible — not even for God? We need not answer that; we simply observe that they would never have believed such beings could ever come to be — beings like themselves, like the whole world, and like the very elements from which they originated. It is better to trust that the things impossible by human nature and power are possible for God, than to persist in unbelief like the rest. For we have known our teacher Jesus Christ, who said, "The things that are impossible with humans are possible with God" (Luke 18:27). And he said, "Do not fear those who kill you and after that can do nothing more, but fear the one who after death is able to throw both soul and body into Gehenna" (Matthew 10:28). Gehenna is the place where those who have lived unrighteously and refuse to believe that these things will come to pass, which God taught through Christ, are destined to be punished.