Strong's Greek #4973
σφραγίς

Englishman's Concordance (References)

σφραγίς sphragis — 1 Occurrence

1 Corinthians 9:2 - N-NFS
GRK:ἡ γὰρ σφραγίς μου τῆς
NAS: I am to you; for you are the seal of my apostleship
KJV: for the seal of mine
INT: the indeed seal of my the