In 1 Corinthians 6:6, Paul repeats the shame: believers suing believers before unbelievers—a direct mirror of the indictment here.

1 Corinthians 6:7 escalates the reproach: having lawsuits at all is a defeat; better to be wronged than to drag fellow believers to court.

1 Corinthians 1:11 notes contentions among the Corinthian church—the same divisive spirit that leads to lawsuits here.

1 Corinthians 3:3 labels envy and strife as evidence of carnality—lawsuits are another manifestation of that fleshly behavior.

In 1 Cor 5:12, Paul establishes that believers judge those inside the church, not outsiders — the same principle behind the rebuke in 6:1 against taking disputes to unbelievers.

1 Corinthians 1:2 identifies believers as 'saints'—making the contrast stark: these same saints are now suing each other before the unrighteous.

Matthew 18:15-17 provides Jesus' procedure for settling disputes within the church, directly supporting Paul's argument against secular courts in 6:1.

Acts 18:15 has Gallio telling the Jews to handle their own law matters themselves, echoing Paul's call for believers to resolve disputes internally.

Exodus 18:16 shows Moses judging disputes among Israel—a precedent for God's people resolving matters internally, which Paul echoes here.

Matthew 18:17 instructs taking disputes to the church—the very principle Paul applies when he says believers should not go to secular courts.