There is one God, in whom there is the Divine Trinity, and he is the Lord JesusChrist. This can be briefly illustrated in the following way: It is a certain and established truth that God is one, and his essence cannot be divided; and also that there is a Trinity. Since God is One, and his essence cannot be divided, it follows that God is one Person. And since he is one Person, the Trinity is in that Person. It is clear that this Person is the Lord Jesus Christ from the fact that he was conceived from God the Father (Luke 1:34, 35), and thus as to his soul and life itself he is God. Therefore, as he himself said, "he and the Father are one." (John 10:30).
Brief Exposition #44
Since the Bible is a divine revelation, every single part of it is divine. Anything that comes from the divine could be no other way. Everything that comes from the divine goes down through the heavens all the way to people on earth. In heaven it is adapted to the wisdom of the angels there, and on earth it is adapted to the understanding of the people there. So the Bible has an inner, spiritual meaning for angels and an outer, material-level meaning for people on earth. That is why our connection to heaven happens through the Bible.
The New Jerusalem #252
Some people believe it is hard to lead the heaven-bound life that is called "spiritual" because they have heard that we need to renounce the world and give up the desires attributed to the body and the flesh and "live spiritually." All they understand by this is spurning worldly interests, especially concerns for money and prestige, going around in constant devout meditation about God, salvation, and eternal life, devoting their lives to prayer, and reading the Word and religious literature. They think this is renouncing the world and living for the spirit and not for the flesh. However, the actual case is quite different, as I have learned from an abundance of experience and conversation with angels. In fact, people who renounce the world and live for the spirit in this fashion take on a mournful life for themselves, a life that is not open to heavenly joy, since our life does remain with us [after death]. No, if we would accept heaven's life, we need by all means to live in the world and to participate in its duties and affairs. In this way, we accept a spiritual life by means of our moral and civic life; and there is no other way a spiritual life can be formed within us, no other way our spirits can be prepared for heaven. This is because living an inner life and not an outer life at the same time is like living in a house that has no foundation, that gradually either settles or develops gaping cracks or totters until it collapses.
Heaven and Hell #528
When someone's body can no longer perform its functions in the natural world in response to the thoughts and affections of its spirit (which it derives from the spiritual world), then we say that the individual has died. This happens when the lungs' breathing and the heart's systolic motion have ceased. The person, though, has not died at all. We are only separated from the physical nature that was useful to us in the world. The essential person is actually still alive. I say that the essential person is still alive because we are not people because of our bodies but because of our spirits. After all, it is the spirit within us that thinks, and thought and affection together make us the people we are. We can see, then, that when we die we simply move from one world into another. This is why in the inner meaning of the Bible, "death" means resurrection and a continuation of life.