Reiki not only offers physical healing but it also offers mental-emotional healing via its Sei HeKi symbol.
God wants us to rely on His power.
When Paul appeared to the Church in Corinth, he appeared with God’s power and demonstrated that power. My message and my preaching were not with wise and persuasive words, but with a demonstration of the Spirit’s power, so that your faith might not rest on human wisdom, but on God’s power (1 Corinthians 2:4-5).
Relying on God’s power is an integral part of the Christian faith. What good is the hope of the cross if we don’t go to it?
The mental illness theory is a direct assault on humanity. As if that’s not enough, now Reiki is being used to treat mental-emotional disorders.
To explore the topic of the mental illness theory further, see https://www.barnesandnoble.com/w/psychology-debunked-lisa-bazler/1013404654