The creation account of Genesis brings into light the grand majesty of our Creator. He spoke the entirety of the universe into existence ex nihilo. The fabric of life is sustained by His magnificent power. That provides an ideal description of deity. Thus, attributing the ability of creating things by command to human beings amounts to idolatry because that would also make us gods. Faith itself would become the object of worship. God Himself would essentially be dethroned of His unique position of honor and supremacy. We share traits such as emotion, intellect, and reason, but we are not partakers of His divine essence.
Even the Egyptian magicians who were summoned by the Pharaoh to imitate the miracles performed by Moses recognized limits to their abilities (Exodus 8:18-19). The notion of people being capable of speaking things into existence is impossible because such a superpower transcends our physical limitations. If a person has been influenced by this dangerous deception, then he would do well to read Isaiah chapters forty through forty eight. That context goes on at length to tell us that there is literally nothing like God in terms of His power.
Despite the major biblical problems with this teaching, some proponents have desperately tried finding biblical support for their reasoning. A classic example of eisegesis would be Romans 4:17, which says, "...the God who gives life to the dead and calls into being things that were not." But the Apostle Paul in this text is speaking of God, not man. It is He who works in us. Faith involves us trusting and depending on God. The purpose of us praying is to conform ourselves to His will (1 John 5:14). It is indeed a terrible misfortune to see so-called ministers such as Joel Olsteen, Joyce Meyer, and Kenneth Copeland promote such aberrational theology.