 Some versions of begging the question are more involved and are called circular reasoning. They include more than one inference. Descartes illustrated this kind of fallacy with the example of our belief in the Bible being justified because it is the word of God, and our belief in God’s existence being justified because it is written in the  Bible.[2]  The two propositions lead back and forth to each other, in a circle, each having only the support of the other.