When St. Thomas asks whether God exists, this is not like asking whether Zeus, Apollo, or Athena exist. Rather we are asking whether there is a Something or Someone on which all else depends. None of the five arguments St. Thomas presents for the existence of God depend on Scripture. Each is purely philosophical. We are not in the realm of faith, but still in the realm of the reasonable preambles to faith – although faith goes on to purify and fortify reason, and confirms the conclusion that reason has attained.