Parallel
1 Corinthians 15:14
Robinson-Pierpont Byzantine Textform · Berean Standard Bible
εἰ δὲ χριστὸς οὐκ ἐγήγερται, κενὸν ἄρα τὸ κήρυγμα ἡμῶν, κενὴ δὲ καὶ ἡ πίστις ὑμῶν.
And if Christ has not been raised, our preaching is worthless, and so is your faith.