1 Corinthians 1:5

That in everything ye were enriched in him, in all utterance and all knowledge.

Grosheide explained the last phrase of this verse as meaning that "Their richness in Christ consists especially in the ability to speak well about the revelation of God."[5]

In everything ... has the meaning of "in everything that really matters." The Corinthians were of the same status as all of them "that know the truth" (2 John 1:1:1). Although every Christian is required to study and learn continually, there is a certain corpus of truth that he must know before he can become a Christian; and that body of teaching having been acquired, and the believer having acted upon it by being baptized into Christ, he is at that point "enriched in everything." This was the enrichment enjoyed by the Christians at Corinth. "All things" therefore has in view elementary knowledge and not in the superlative sense of knowing absolutely everything they needed to know, else there would have been no need for Paul to write to them. That Paul intended this verse as a compliment to the Corinthians upon their ability to speak in tongues is evidently a false interpretation.