In Psalm 65:10, this signifies things of the church that will become productive and full of knowledge. (Apocalypse Explained 644)

In Psalm 129:3, to make long furrows signifies the state of good, or its holiness, or here the profanation of the holy things of the church. (Arcana Coelestia 650)

In Ezekiel 17:10, this signifies the effect when there is no good in a particular church. (Apocalypse Explained 419[26])

In Hosea 10:4, this signifies the church devastated to such a degree that at heart they worship another god, and so the evils of punishment are brought upon them. (The Inner Meaning of the Prophets and Psalms 193)

650. 'Length' means the holiness, 'breadth' the truth, and 'height' the good, of the remnants described by the numbers. This cannot be confirmed so easily from the Word because every single thing has reference to the particular subject or thing under discussion. For example, when 'length' applies to time it means perpetual and eternal, as in 'length of days' Psalms 23:6; 21:4, but when it applies to space it means consequent holiness. The situation is the same with 'breadth' and 'height'. All earthly objects are three-dimensional, but no such dimensions can be used in reference to celestial and spiritual things. When they are used to refer to these they mean the degree of perfection, greater or less, independent of the dimensions given, as well as identity and quantity. In this case they are identified as remnants, which are few in quantity.