The Bible refers to the Lord in many different ways seemingly interchangeably. Understood in the internal sense, though, there are important differences. To some degree, the meanings all start with "Jehovah," which is the Lord's actual name. It represents the perfect, eternal, infinite love which is the Lord's actual essence. As such it also represents the good will that flows from the Lord to us and His desire for us to be good. "God," meanwhile, represents the wisdom of the Lord and the true knowledge and understanding He offers to us. The term "the Lord" is very close in meaning to "Jehovah," and in many cases is interchangeable (indeed, translators have a tendency to go back and forth). When the two are used together, though, "the Lord" refers to the power of the Lord's goodness, the force it brings, whereas "Jehovah" represents the goodness itself. In the New Testament, the name "Jehovah" is never used; the term "the Lord" replaces it completely. There are two reasons for that. First, the Jews of the day considered the name "Jehovah" too holy to speak or write. Second, they would not have been able to grasp the idea that the Lord -- who was among them in human form at the time -- was in fact Jehovah Himself. This does ultimately lead to a difference in the two terms by the end of the Bible. Thought of as "Jehovah," the Lord is the ultimate human form and has the potential for assuming a physical human body; thought of as "the Lord" He actually has that human body, rendered divine by the events of his physical life.

904. 21:15 And he who talked with me had a gold reed to measure the city, its gates, and its wall. This symbolically means that to people who possess the goodness of love, the Lord grants a faculty for understanding and knowing the nature of the Lord's New Church as regards its doctrine and its introductory truths, and as regards the Word from which they are drawn.

He who spoke with me symbolizes the Lord speaking from heaven, because it was an angel speaking, one of the seven angels who had the seven bowls mentioned in verse 9, who means the Lord speaking from heaven (no. 895). A reed symbolizes a power or ability springing from the goodness of love - a reed symbolizing power or ability (no. 485), and gold the goodness of love (nos. 211, 726). To measure means, symbolically, to learn the character of a thing, thus to understand and know it (no. 486). The city, the holy Jerusalem, symbolizes the church in respect to its doctrine (nos. 879, 880). Its gates symbolize concepts of truth and goodness from the Word's literal sense, which are truths and goods owing to the spiritual life in them (no. 899). And the wall symbolizes the Word in its literal sense from which the doctrine and concepts come (no. 898).

It is apparent from this that "he who talked with me had a gold reed to measure the city, its gates, and its wall," symbolically means that to people who possess the goodness of love, the Lord grants a faculty for understanding and knowing the nature of the Lord's New Church as regards its doctrine and its introductory truths, and as regards the Word from which they are drawn.

[2] These symbolic meanings cannot be seen at all in the literal sense, for one sees in it only that an angel speaking with John had a gold reed with which to measure the city and its gates and wall. But even so, that these words contain another meaning, a spiritual meaning, is clearly apparent from the fact that the city Jerusalem does not mean a real city, but the church. Consequently everything said about Jerusalem as a city symbolizes such things as have to do with the church, and everything having to do with the church is, in itself, spiritual.

Such a spiritual meaning is present also in what is said in chapter 11 above, where we are told the following:

I was given a reed like a measuring rod. And the angel stood by, saying, "Rise and measure the temple of God, the altar, and those who worship there." (Revelation 11:1)

A similar spiritual meaning is present, too, in everything that the angel measured with a reed in Ezekiel 40; 41; 42; 43; 44; 45; 46; 47; 48. Also in these verses in Zechariah:

I raised my eyes and looked, and behold, a man with a measuring line in his hand. So I said, "Where are you going?" And he said to me, "To measure Jerusalem, to see what its width is and what its length." (Zechariah 2:1-2)

Indeed, such a spiritual meaning is present in everything connected with the Tabernacle and in everything connected with the Temple in Jerusalem, whose measurements we are told, and also in the measurements themselves. And yet nothing of this can be seen in the literal sense.