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.

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

In Genesis 22:13, this signifies with all power as to the truths of faith. (Arcana Coelestia 2832) Horns are mentioned in the Word here and there, and signify the power of truth from good, or, in the opposite sense, of falsity from evil. Here they signify that the spiritual are entangled in external knowledges of the natural with all power as to truth; but are deprived of the power of receiving truth. (Arcana Coelestia 2832)

In Revelation 8:11, this signifies power in speaking, teaching, and writing, consequently, in reasoning and arguing.

'The little horn that rose up,' as mentioned in Daniel 7:3-8, signifies the full perversion of the Word by the application of its literal sense to the confirmation of the love of dominion. It is called 'little,' because such perverted application is not sensibly apparent to the understanding of a person, or to the sight of his spirit.

When spoken of the Lord, a 'horn' signifies omnipotence. It also stands for the power of truth from good.

(Verweise: Apocalypse Revealed 270)