The Catechism in Questions & Answers

564. Does the Bible relate any other characteristics of the bridal congregation?

Yes. Further characteristics of the bridal congregation are mentioned in Revelation 14: 1-5. Here the image of a group of “one hundred and forty-four thousand” is used are a reference to the bridal congregation. The number “144,000” is not to be understood literally, but is of symbolic nature. It is derived from the twelve tribes of Israel and is described with the following images: “Behold, a Lamb standing on Mount Zion, and with Him one hundred and forty-four thousand, having His Father’s name written on their foreheads. [...] These are the ones who follow the Lamb wherever He goes. These were redeemed from among men, being firstfruits to God and to the Lamb. And in their mouth was found no deceit, for they are without fault before the throne of God.”