9515. 'Covering over the mercy-seat with their wings' means spiritual realities that provide cover. This is clear from the meaning of 'covering over the mercy-seat' as providing cover for the good through which lies access to the Lord; and from the meaning of 'wings' as the truths of faith or spiritual truths, dealt with immediately above in 9514, and in 8764. The spiritual realities are said to provide cover for the good because in heaven what is celestial, the good of love, manifests itself as something naked; but when it manifests itself through spiritual realities, which are the truths of faith, it is seen as something clothed.

In Exodus 28:11, 13, 14, 25, this signifies to be continued from good, and to derive continual existence therefrom; for existence is perpetual subsistence, and subsistence is a perpetual coming forth. (Arcana Coelestia 9840, 9847)