Non-believers in a worship band constitute vain worship

Mike applies the biblical principle that God hates vain worship — worship without genuine intent and meaning. He cites Jesus's teaching against vain prayers and OT contexts where God rejected empty worship. An unsaved person playing in a worship band is worshipping in vain because they are not genuinely directing worship to God. He rejects the justification of including non-believers as an outreach strategy, arguing this sacrifices the holiness of corporate worship. He would prefer one genuine worshipper to a band full of skilled unbelievers.