Seal
In Genesis 38:18, this signifies a token of consent. (Arcana Coelestia 4874)
In Revelation 9:4, this signifies people who have not been regenerated because they are not in charity and its faith. (Apocalypse Revealed 426)
In Revelation 5:1, this signifies the Word completely hidden from angels and men. (Apocalypse Revealed 257)