2 Corinthians 13:3 shows the Corinthians demanding proof of Christ in Paul — the very test Paul says he passes in this verse.

2 Corinthians 13:4 grounds Paul's confidence: as Christ lives by God's power despite weakness, so Paul will live by that power — explaining why he won't fail.

2 Corinthians 13:5 commands self-examination — Paul's trust in verse 6 is that as they test themselves, they will also see that he has not failed.

2 Corinthians 13:10 reveals Paul's purpose in writing — to avoid harshness when he comes — which his confidence here aims to achieve.

2 Corinthians 12:20 expresses Paul's fear that he may not find them as he desires — contrasting with the confident trust in this verse.

1 Corinthians 9:27 shows Paul disciplining himself to avoid being disqualified — the same concept of failing the test that he denies here.