σφραγιστήριον
From LSJ
Οὕτως γὰρ ἠγάπησεν ὁ Θεὸς τὸν κόσμον, ὥστε τὸν Υἱὸν τὸν μονογενῆ ἔδωκεν, ἵνα πᾶς ὁ πιστεύων εἰς Αὐτὸν μὴ ἀπόληται ἀλλ᾽ ἔχῃ ζωὴν αἰώνιον → For God so loved the world that he gave his only begotten Son that whosoever believeth in him should not perish but have everlasting life (John 3:16)
English (LSJ)
τό, seal, stamp, PLond.5.1657.13 (iv/v A.D.); = signaculum, signatorium, Gloss.
German (Pape)
[Seite 1052] τό, Siegel, Petschaft, Sp.