Own
In many cases, the spiritual meaning of "own," both as a verb and as an adjective, is relatively literal. When people are described as the "Lord's own," however, it specifically means those people who know Him and have His Word. This has taken various forms since the dawn of humanity; in the prehistoric church known as the "Most Ancient Church" the Lord's truth -- the direct expression of His love -- flowed into people directly. In the Ancient Church the Lord's Word was recognized in nature and in the form of deeply representative stories, some of which were passed on to us in the early chapters of Genesis. Among the Children of Israel the Lord's Word was expressed through the Ten Commandments, the laws of Moses, the very history of the nation of Israel and the various psalms and prophecies. The early Christians had those stories along with the teaching and inspiration of Jesus himself. We now have the whole Bible, including the teachings of Jesus, and can understand the Bible's true meaning. Each of these churches, then, was at some point the Lord's own.
Arcana Coelestia #2117
2117. THE LAST JUDGEMENT
Few nowadays know what the Last Judgement is. They imagine that it is going to be accompanied by the destruction of the world; and this leads to conjectures that this earth, together with everything else in the visible world, is going to be destroyed by fire. They also conjecture that then for the first time the dead will rise again and appear for judgement, and the evil are to be cast into hell and the good to rise up to heaven. These conjectures are based on the prophetical parts of the Word where references are made to a new heaven and a new earth, and also to a New Jerusalem. Such people do not realize that the prophetical parts of the Word have a meaning altogether different in the internal sense from what appears in the sense of the letter, and that 'heaven' is not used to mean heaven, nor 'the earth' to mean the earth, but the Lord's Church in general, and as it exists with each individual in particular.