Parallel
1 Corinthians 8:2
Nestle 1904 Greek New Testament · Berean Standard Bible
εἴ τις δοκεῖ ἐγνωκέναι τι οὔπω ἔγνω καθὼς δεῖ γνῶναι
The one who thinks he knows something does not yet know as he ought to know.