After the "Great Amen" everything looks the same: the appearance of bread and wine, a regular man in unusual garments and a gathering of common people of various ages, races, languages and states in life.
On the surface, it all seems ordinary. But our faith affirms that Jesus Christ is really present. The bread and wine have actually become his body and blood; the priest is acting in Christ's person; and we, the assembly, are given God's Spirit so we also become the body of Christ.
What happens next?