Parallel
1 Corinthians 8:2
Robinson-Pierpont Byzantine Textform · Berean Standard Bible
Εἰ δέ τις δοκεῖ εἰδέναι τι, οὐδέπω οὐδὲν ἔγνωκεν καθὼς δεῖ γνῶναι·
The one who thinks he knows something does not yet know as he ought to know.