Strong's Greek #500
ἀντιχρίστου

Englishman's Concordance (References)

ἀντιχρίστου antichristou — 1 Occurrence

1 John 4:3 - N-GMS
GRK:τὸ τοῦ ἀντιχρίστου ὃ ἀκηκόατε
NAS: this is the [spirit] of the antichrist, of which
KJV: is that [spirit] of antichrist, whereof
INT: that of the antichrist [of] which you heard