The Bible expects the congregation of God's people to declare the "Amen." This sermon series by Pastor Jeff Niell of Emmanuel Covenant Church in Phoenix, Arizona, presents the use of the congregational Amen under three headings: 1) What is the Amen?, 2) Why the Amen?, and 3) When the Amen? When a congregation vigorously and corporately declares the Amen, they are honoring the God of truth (Isaiah 65:17) and affirming that which is true. Congregations need to be instructed on the proper use of this mighty declaration.