In 2 Cor 11:9, Paul explains he refused to be a burden — this is the practice he continues to undermine false apostles' claims.

In 11:18, Paul decides to boast 'according to the flesh' — a shift from undermining boasters to joining them ironically.

In 2 Cor 11:10, Paul asserts his own boasting will continue—contrasting with the false apostles' desire to boast that he is cutting off.

In 2 Cor 5:12, Paul gives the Corinthians reason to answer those who boast outwardly — same goal of countering false apostles.

In 2 Cor 8:20, Paul also takes precaution to avoid discredit; both show his care to prevent giving opponents any opportunity.

In 1 Cor 9:12, Paul also forgoes his right to support — the same policy to avoid hindering the gospel, parallel motivation.

In Galatians 6:13, false teachers boast in circumcision — parallel to the false apostles here who boast in equal terms, both are external boasts Paul opposes.

In Galatians 6:14, Paul boasts only in the cross — contrasting with the false apostles' boast he undermines here.

In Genesis 14:23, Abram refuses spoils so the king cannot boast — the same logic Paul uses to prevent false apostles from boasting.

In Phil 1:15-18, Paul tolerates rival preachers — contrasting his active undermining of false apostles in 11:12.

In 1 Tim 5:14, Paul advises avoiding any occasion for slander — similar principle of removing grounds for false claims, though different situation.