2 Corinthians in the early church

Every passage that quotes, alludes to, or echoes 2 Corinthians, in verse order; passages on the same verse are in date order. References use the Protestant English Bible's numbering, with a writer's own numbering in brackets where it differs.

Verse	Passage	Kind	Date
2 Cor 2:14	To the Ephesians 17.1 · Ignatius of Antioch	echo, low confidence	ca. 110 (range ca. 105–135)
2 Cor 2:15	Martyrdom of Polycarp 15.2 · Anonymous	echo, low confidence	ca. 156–160
2 Cor 3:18	1 Clement 36.2 · Clement of Rome	echo, medium confidence	ca. 95–97 (range ca. 70–100)
2 Cor 4:14	To the Trallians 9.2 · Ignatius of Antioch	allusion, medium confidence	ca. 110 (range ca. 105–135)
2 Cor 4:14	To the Philippians 2.2 · Polycarp of Smyrna	allusion, high confidence	ca. 110–135
2 Cor 4:18	To the Romans 3.3 · Ignatius of Antioch	echo, medium confidence	ca. 110 (range ca. 105–135)
2 Cor 5:1	To Diognetus 6.8 · Anonymous	echo, medium confidence	ca. 150–200 (disputed)
2 Cor 5:8	Martyrdom of Polycarp 2.2 · Anonymous	echo, low confidence	ca. 156–160
2 Cor 5:10	Epistle of Barnabas 4.12 · Anonymous	echo, medium confidence	ca. 70–135 (often ca. 130)
2 Cor 5:10	To the Philippians 6.2 · Polycarp of Smyrna	allusion, medium confidence	ca. 110–135
2 Cor 5:21	To Diognetus 9.5 · Anonymous	echo, medium confidence	ca. 150–200 (disputed)
2 Cor 6:7	To the Philippians 4.1 · Polycarp of Smyrna	allusion, medium confidence	ca. 110–135
2 Cor 6:9	To Diognetus 5.12 · Anonymous	allusion, medium confidence	ca. 150–200 (disputed)
2 Cor 6:10	To Diognetus 5.13 · Anonymous	allusion, medium confidence	ca. 150–200 (disputed)
2 Cor 6:16	To the Ephesians 15.3 · Ignatius of Antioch	echo, medium confidence	ca. 110 (range ca. 105–135)
2 Cor 8:21	To the Philippians 6.1 · Polycarp of Smyrna	quotation, high confidence	ca. 110–135
2 Cor 9:7	Didache 4.7 · Anonymous	echo, medium confidence	ca. 50–150 (often ca. 100)
2 Cor 10:3	To Diognetus 5.8 · Anonymous	allusion, medium confidence	ca. 150–200 (disputed)
2 Cor 10:17	1 Clement 13.1 · Clement of Rome	echo, medium confidence	ca. 95–97 (range ca. 70–100)
2 Cor 11:3	To Diognetus 12.8 · Anonymous	echo, medium confidence	ca. 150–200 (disputed)