The loins, as in Ezekiel 29:7, signify the marriage of truth and good. In general, loins signify love, and when referring to the Lord, divine love. They can also signify the interiors of conjugial love. In Isaiah 11:5, they signify people in the divine good of love, and reins signify people in love towards their neighbor.

(Odkazy: Apocalypse Revealed 830)

6658. 'And go up out of the land' means that the Church will have thereby been established. This is clear from the meaning of 'going up' as being raised up, raised up towards more internal aspects of the Church, dealt with in 3084, 4539, 4969, 5406, 5817, 6007; and from the meaning of 'the land', the land of Goshen in this instance, as the Church, dealt with above in 6649. Being raised up towards more internal aspects of the Church, meant by going up out of the land and coming into the land of Canaan, is what 'the Church will have been established' implies. The Church has, it is true, been established with a person when he is motivated by affection to do good, yet it has not been fully established until after he has fought against evils and falsities, thus after he has undergone temptations. Only after that does he become truly a Church, at which point he is brought into heaven, represented by the bringing of the children of Israel into the land of Canaan.