Many is the speaker who, after he has made some point which he considers especially good, will then say: "And all the people said, 'Amen'" (meaning "that's right!").
It is interesting to note the biblical examples of such a demonstration. There are sixteen times in which this or a similar statement occurs in the Bible--all in the Old Testament. Twelve of these are found in Deuteronomy 27:14-26 with the people so responding after the pronouncement of a "curse" on those who commit various sins. The last curse is as follows: "Cursed be he that confirmeth not all the words of this law to do them. And all the people shall say, Amen" (v. 26) in agreement with the judgment.
King David described his thanksgiving for the return of the Ark of the Covenant with, "Blessed be the LORD God of Israel for ever and ever. And all the people said, Amen, and praised the LORD" (1 Chronicles 16:36). When Jerusalem's wall restoration was being delayed and Nehemiah had to rebuke some of his people for their covetousness, threatening God's judgment on them if they did not repent, then "all the congregation said, Amen, and praised the Lord. And the people did according to this promise" (Nehemiah 5:13). After the wall was finished, as Ezra read the Scriptures to the people, "Ezra blessed the LORD, the great God. And all the people answered, Amen, Amen" (Nehemiah 8:6). The final such reference is in our text.
If we follow biblical precedent, therefore, whenever God's Word is read to a congregation, either in denunciation of sin or thanksgiving for blessing and revival, or simply in praising the Lord for His eternal goodness, it is appropriate for the people to respond with a heartfelt "Amen!" HMM