it is written
1 Corinthians 1:19
1:19 it is written. Paul is quoting here from Isaiah 29:14, with somewhat similar relevant passages in Jeremiah 49:7 and Obadiah 8. The section from this verse through the end of chapter 2 is a sobering indictment of supposed human wisdom, as opposed to true wisdom in Christ (I Corinthians 1:30).