'Twenty four' in the Bible

Round the throne were twenty-four thrones, and seated on the thrones were twenty-four elders, clothed in white garments, and golden crowns on their heads.

the twenty-four elders fall down before him who sits on the throne and worship him who lives for ever and ever; they cast their crowns before the throne, saying,

And when he had taken the scroll, the four living creatures and the twenty-four elders fell down before the Lamb, each one holding a harp and golden bowls full of incense, which are the prayers of the saints.

And the twenty-four elders, who sit on their thrones before God, fell on their faces and worshipped God,

And the twenty-four elders and the four living creatures fell down and worshipped God who is seated on the throne, saying, "Amen. Hallelujah!"