Blessed by Jehovah is his land, in regard to the precious things of heaven, to the dew, and to the deep lying beneath, and to the precious things of the fruits of the sun, and to the precious things of the produce of the months, and to the precious things of the eternal hills, and to the precious things of the earth and of its fulness. Deut 33:13-16.

Here 'the precious things of heaven', 'the precious things of the fruits of the sun', 'the precious things of the produce of the months', 'the precious things of the eternal hills', and 'the precious things of the earth' mean various kinds of spiritual things. The word 'precious' was also applied to precious stones, pearls, balms, spices, and similar commodities, which all mean spiritual things.

[2] What spiritual things are has been stated many times already, namely that in the Lord's kingdom there are celestial things and there are spiritual things. Celestial things are forms of good, spiritual things forms of truth from that good. Nothing exists in the universe that is unrelated to good or to truth. Everything to do with use and life is related to good, whereas everything to do with doctrine and knowledge, in particular concerning use and life, is related to truth. Or what amounts to the same, that which belongs to the will is called good or evil, whereas that which belongs to the understanding is referred to as truth or falsity. Good therefore, being that alone which is the expression of love and charity and which flows in from the Lord, is celestial, whereas truth, being that which springs from good, is spiritual. The reason 'precious things' were given to the brother when 'vessels of silver, vessels of gold, and garments' were given to the sister when she became a bride was that the brother meant good in the natural man, and this good is enlightened when truth is introduced into good in the rational. Indeed this is the origin of all enlightenment of good and truth in the natural man.