879. 21:2 Then I, John, saw the holy city, New Jerusalem, coming down from God out of heaven. This symbolizes the New Church to be established by the Lord at the end of the previous one, which will be affiliated with the New Heaven and possess Divine truths in its doctrine and in its life.

John mentions himself by name here, saying "I, John," because as an apostle he symbolizes the goodness of love toward the Lord and the attendant goodness of life. Consequently he was more loved than any of the rest of the apostles, and at the Last Supper he reclined on the Lord's breast (John 13:23; 21:20). And this church, which is the subject here, has a similar symbolism.

That Jerusalem symbolizes the church will be seen in the next number. It is called a city and described as a city because of its doctrine and its life in accordance with that doctrine. For a city in the spiritual sense symbolizes doctrine (nos. 194, 712). It is called a holy city owing to the presence of the Lord, who alone is holy, and owing to the Divine truths from the Word that it has in it from the Lord, which are called holy (nos. 173, 586, 666, 852). And it is called new, because He who sat on the throne said, "Behold, I am making all things new" (Revelation 21:5). It is also said to be coming down from God out of heaven because it descends from the Lord through the New Christian Heaven, as said in no. 876 in the exposition of verse 1 in this chapter. For the church on earth is formed by the Lord through heaven, in order that heaven and the church may be in harmony and affiliated.

As with many common verbs, the meaning of “to say” in the Bible is highly dependent on context. Who is speaking? Who is hearing? What is it about? Is it a command, a message, an apology, instruction? All these things enter into the meaning of “say.” In general, though, “saying” has to do with sharing truth at various levels -- from the most exalted power people can have to perceive the Lord's desires directly to the most basic of orders issued to people at their lowest.