When 'islands' are contrasted to 'earth' or 'mountains,' they signify the truths of faith, because they are in the sea. They signify doctrinal things which are rituals. 'Islands' signify peoples who are more remote from the worship of God. People who are steeped in the internal sense of the Word, such as angels, do not know what islands are, because they no longer have any concept of such places. Instead they have a perception of more remote worship, like the gentiles outside the church.

'Islands,' in Ezekiel 27:6, signify people in the church in a natural, materially-oriented state but still rational.

(References: Apocalypse Explained 406; Isaiah 1, Isaiah 49, 49:1)

4976. 'And ministered to him' means that factual knowledge was assigned to its own good. This is clear from the meaning of 'ministering' as serving by supplying what another has need of, in this case as being assigned to since the subject is natural good to which factual knowledge is to be assigned. 'Ministering' is also used to describe known facts, for in the Word a minister and a servant mean factual knowledge or natural truth because this is subservient to good as its lord. Factual knowledge stands in relation to delight present in the natural man - or what amounts to the same, natural truth stands in relation to its good - in exactly the same way as water does to bread, or drink to food. Water or drink enables bread or food to be dissolved, and once dissolved to be conveyed into the blood, from which it passes into all parts around the body and nourishes them. Without the water or drink the bread or food is not broken down into extremely small particles and carried around the body to fulfill its purpose.

[2] The same applies to factual knowledge in relation to delight, or truth in relation to good. That being so, good longs for and desires truth, and does so because of the purpose such truth can fulfill by ministering to it and serving it. Food and drink also correspond to these. No one in the next life is nourished by any natural food or natural drink, only by spiritual food and spiritual drink, spiritual food being good, and spiritual drink truth. This is why, when bread or food is mentioned in the Word, angels understand spiritual bread or food, which is the good of love and charity; and when water or drink is mentioned they understand spiritual water or drink, which is the truth of faith. From this one may see what the truth of faith without the good of charity is, and also what kind of nourishment the former without the latter is able to supply to the internal man; that is to say, it is like the nourishment supplied by water or drink alone without bread or food. It is well known that a person fed on water or drink alone wastes away and dies.