The ones who had been sent were from the Pharisees.

 The Westminster Confession of Faith begins by saying that "the lights of nature, and the works of creation and providence do so far manifest the goodness, wisdom and power of God as to leave men inexcusable." Long ago Paul had said that the visible things of the world were so designed by God as to lead men's thoughts to the invisible things, and that if men had looked with open eyes and an understanding heart at the world their thoughts would have been inevitably led to the creator of the world ( Romans 1:19-20). The world has always been such that, looked at in the right way, it would lead men's minds to God. 