And the four living creatures said, "Amen," and the elders fell down and worshiped.

1 Corinthians 14:16
Otherwise, if you speak a blessing in spirit, how can someone who is uninstructed say "Amen" to your thanksgiving, since he does not know what you are saying?

Revelation 4:4
Surrounding the throne were twenty-four other thrones, and on these thrones sat twenty-four elders dressed in white, with golden crowns on their heads.

Revelation 4:6
And before the throne was something like a sea of glass, as clear as crystal. In the center, around the throne, were four living creatures, covered with eyes in front and back.

Revelation 4:10
the twenty-four elders fall down before the One seated on the throne, and they worship Him who lives forever and ever. They cast their crowns before the throne, saying:

Revelation 5:6
Then I saw a Lamb who appeared to have been slain, standing in the center of the throne, encircled by the four living creatures and the elders. The Lamb had seven horns and seven eyes, which represent the seven Spirits of God sent out into all the earth.

Revelation 5:8
When He had taken the scroll, the four living creatures and the twenty-four elders fell down before the Lamb. Each one had a harp, and they were holding golden bowls full of incense, which are the prayers of the saints.

Revelation 5:11
Then I looked, and I heard the voices of many angels and living creatures and elders encircling the throne, and their number was myriads of myriads and thousands of thousands.

Revelation 7:12
saying, "Amen! Blessing and glory and wisdom and thanks and honor and power and strength be to our God forever and ever! Amen."

Revelation 19:4
And the twenty-four elders and the four living creatures fell down and worshiped God who sits on the throne, saying: "Amen, Hallelujah!"

And the four beasts said, Amen. And the four and twenty elders fell down and worshipped him that lives for ever and ever.