1618. 'And there he built an altar to Jehovah' means worship as the outcome of that state. This is clear from the meaning of 'an altar' as the representative of all worship in general, dealt with already in 921. Worship in the internal sense means all conjunction by means of love and charity. A person is worshipping all the time if love and charity abide in him, external worship being only the outward expression of it. Such is the worship of angels, and therefore with them the sabbath never comes to an end; and this in turn explains why in the internal sense 'the sabbath' means the Lord's kingdom. While a person is in the world however he ought certainly to participate in external worship as well; for it is by external worship that internal things are aroused, and by means of external worship external things are kept holy so as to enable internal to flow in. Furthermore a person is endowed with cognitions by this means, and is made ready to receive celestial things, and also has states of holiness conferred on him, though he is not conscious of this. These states of holiness are preserved by the Lord for his use in eternal life; in fact all the states of his life reappear in the next life.

Plants, in general, represent knowledge, ideas, and intellectual concepts -- things of the mind. Plant the best and most beautiful of those in one place, give them plenty of water (truth from the Lord about day-to-day things), plenty of sunlight (the Lord's wisdom) and warmth (the Lord's love), tend them to keep the weeds (false ideas) out, and you get a garden. So it makes sense that a garden in the Bible represents the intellect, where with proper care we can nurture the best and most useful ideas and ways of thinking.

(Odkazy: Arcana Coelestia 98, 100, 1588; Heaven and Hell 111)