1 Corinthians 8:2 in the King James Version
And if any man think that he knoweth any thing, he knoweth nothing yet as he ought to know.
Context
1 Now concerning things sacrificed to idols: We know that we all have knowledge. Knowledge puffs up, but love builds up.
2 But if anyone thinks that he knows anything, he doesn’t yet know as he ought to know.
3 But anyone who loves God is known by him.