In Deuteronomy 15:11, this signifies that truth requires good and good truth, and always will. (Arcana Coelestia 5365)

In Psalm 21:5, this signifies that the Lord will to eternity deliver those deprived of truths and good against their will. (The Inner Meaning of the Prophets and Psalms 271, Apocalypse Explained 95)

5320. 'And placed a chain of gold onto his neck' means an outward sign denoting the joining of interior things to exterior ones, good being that which effects that joining together. This is clear from the meaning of 'the neck' as a flowing in, also the communication of higher things with lower ones, or what amounts to the same, interior things with exterior ones, dealt with in 3542; and therefore 'a chain', because it goes around the neck, is a sign denoting the joining together of those things. 'A chain of gold' means a joining together by means of good; that is, good is the means which effects it, because 'gold' means good, 113, 1551, 1552. A sign denoting the joining of interior truth to exterior truth is meant by 'a chain onto the neck' in Ezekiel,

I adorned you with ornaments and put bracelets onto your hands and a chain onto your neck. Ezekiel 16:11.