2 Corinthians 7:12-15 elaborates the same situation — Paul's letter tested their obedience, and their positive response brought him joy and confidence.

In 2 Corinthians 7:15, their obedience is remembered—the same Corinthians whose obedience Paul tested by letter.

In 2 Corinthians 10:6, Paul links obedience and punishment—a complement to the test of obedience here.

In 2 Corinthians 7:5, Paul describes his anxiety after sending the letter—the same situation as this test of obedience.

In 2 Corinthians 7:7, Titus confirms the Corinthians' obedient response — the very proof Paul sought when testing their submission.

2 Corinthians 8:24 calls for proof of love publicly — the test of obedience in 2:9 is similarly a way to demonstrate genuine love.

In Philippians 2:22, the same Greek word 'proof' (dokime) describes Timothy's proven obedience—a parallel test of character.

In 2 Thessalonians 3:14, obedience to Paul's epistle is enforced with discipline—parallel testing of obedience by letter.

In Philemon 1:21, Paul writes confident of Philemon's obedience—parallel to testing obedience by letter.

In 2 Thessalonians 3:4, Paul similarly expresses confidence in the Thessalonians' obedience, mirroring the test of obedience here.

In Philippians 2:12, obedience in Paul's absence is commended—a similar theme of tested obedience.