1 Cor 4:7 asks 'What do you have that you did not receive?' — directly parallel to the point that the word is received, not self-originated.

Acts 18:1-17 recounts Paul founding the Corinthian church — the word came to them via Paul, answering Paul's rhetorical question.

2 Cor 10:13-16 warns against boasting beyond limits — parallels the rebuke about claiming the word originated with Corinth.

1 Thess 1:8 says the word sounded forth from Thessalonica — they spread what they received, contrasting Corinth's self-origination claim.