An instance of saying ‘amen’.

A title of Christ; the Faithful One (especially with reference to Revelation 3:14)

To say amen.

To say amen to; to ratify solemnly.

At the end of religious prayers: so be it.

In many Abrahamic religious texts and creeds: truly, verily.

An expression of strong agreement. Often, though dated, in the phrase "Amen to that".