At the beginning of intensive meditation the disciples of zen face absurd riddles – koans. For example:
 “If we clap our hands, we can hear a single tone. What is the tone of one hand?” The purpose of zen is to remove normal and sound mind and human conscience  – God’s voice in us. The whole system is founded on demonic pride and lie which abuses the corrupted human nature and develops what is negative in us –   original sin. Through meditations the soul unites with this snake force – sin in us, and at the same time it unites with the false system of the world as well as with the ruler of this world – the devil.