2 Corinthians 13:10 explains that Paul's authority is for building up — the practical outworking of his truth-bound stance in 13:8.

Verse 9 directly follows, showing Paul’s joy in their strength and prayer for their perfection—all consistent with acting for truth.

2 Corinthians 10:8 also states Paul's authority is for building up, not destroying — aligning with the truth-only principle of 13:8.

Proverbs 21:30 states no plan can succeed against the LORD—directly paralleling that nothing can be done against the truth.

Acts 5:1-11 shows God judging Ananias and Sapphira for lying—a dramatic example of consequences for acting against truth.

In Acts 13:8, Elymas opposes the gospel—illustrating someone acting against truth, which Paul says he cannot do.

Acts 19:11-17 shows God's power confirming the truth through Paul, while false exorcists fail—illustrating that genuine truth cannot be counterfeited.

1 Corinthians 5:5 exemplifies acting for truth by delivering a sinner to Satan for his ultimate salvation—consistent with the principle here.

1 Timothy 1:20 is another instance of Paul delivering blasphemers to Satan—upholding truth by removing false teachers.

Hebrews 2:4 describes signs confirming the gospel truth—the same truth Paul's ministry serves and cannot oppose.