2:31. And He taught Adam the nature of all things; then He placed them before the angels and said: "Tell Me the nature of these if ye are right."       32. They said: "Glory to Thee of knowledge we have none save that Thou hast taught us: in truth it is Thou who art perfect in knowledge and wisdom."       33. He said: "O Adam! tell them their natures."  When he had told them Allah said: "Did I not tell you that I know the secrets of heaven and earth and I know what ye reveal and what ye conceal?"