Philippians 1:15 introduces the envy and rivalry preaching that this verse elaborates on — same context, immediate parallel.

In Acts 22:1, Paul begins his defense to the crowd, directly responding to the opposition he faced during his imprisonment.

In Acts 26:1, Paul makes a formal defense before Agrippa, continuing his testimony amid the affliction of his chains.

In Acts 26:24, Festus calls Paul mad during his defense, illustrating the ridicule and opposition Paul endured for the gospel.

In 2 Timothy 1:12, Paul expresses confidence in God's protection despite suffering, contrasting the opponents' malice with his own trust.

In 2 Timothy 4:7, Paul declares he fought the good fight and kept the faith, completing his race despite the opposition he endured.

In 1 Timothy 2:7, Paul affirms his divine appointment as apostle and teacher to Gentiles, reinforcing his authority against those who oppose him in chains.

In 2 Timothy 1:11, Paul restates his calling as preacher, apostle, and teacher, underscoring his legitimacy amid the opposition he faces.

In 1 Corinthians 9:3, Paul similarly offers a defense of his ministry against critics, paralleling the opposition context here.