| 2 John 1 | Lines 61–70 · Anonymous | allusion, medium confidence | late 2nd or 4th century (disputed) |
| 2 John 1 | Canon 60 · Anonymous | allusion, high confidence | ca. 343–381 |
| 2 John 1 | Canon 47 · Anonymous | allusion, high confidence | 397 |
| 2 John 1:1 | Church History 7.25.11 · Eusebius of Caesarea | allusion, high confidence | ca. 300–325 |
| 2 John 1:1 | Demonstration of the Gospel 3.5.88 · Eusebius of Caesarea | allusion, high confidence | ca. 314–324 |
| 2 John 1:1 | Letter 123.11 · Jerome | quotation, high confidence | ca. 370–419 |
| 2 John 1:1 | Letter 146.1 · Jerome | quotation, high confidence | ca. 370–419 |
| 2 John 1:1 | Explanation of Twelve Psalms 36.60.2 · Ambrose | allusion, high confidence | ca. 387-397 |
| 2 John 1:1 | On Illustrious Men 9 · Jerome | quotation, high confidence | 392–393 |
| 2 John 1:4–11 | On Not Agreeing with Heretics 13 · Lucifer of Cagliari | quotation, high confidence | ca. 356–361 |
| 2 John 1:5 | Liber Orsiesii 54 · Orsiesius | quotation, medium confidence | ca. 380-390 |
| 2 John 1:5 | On Grace and Free Will 17 · Augustine of Hippo | quotation, high confidence | ca. 426 |
| 2 John 1:7 | To the Smyrnaeans 5.2 · Ignatius of Antioch | echo, medium confidence | ca. 110 (range ca. 105–135) |
| 2 John 1:7 | To the Philippians 7.1 · Polycarp of Smyrna | allusion, high confidence | ca. 110–135 |
| 2 John 1:7–8 | Against Heresies 3.16.8 · Irenaeus of Lyons | quotation, high confidence | ca. 180–190 |
| 2 John 1:7 | On the Flesh of Christ 24 · Tertullian | allusion, medium confidence | ca. 206–211 |
| 2 John 1:7 | Against Marcion 3.8 · Tertullian | allusion, high confidence | 207/208 (third edition, completed later) |
| 2 John 1:7 | Homilies on Exodus 3.2 · Origen | allusion, medium confidence | ca. 238–250 (Rufinus's translation ca. 400–410) |
| 2 John 1:7 | On Not Agreeing with Heretics 14 · Lucifer of Cagliari | allusion, high confidence | ca. 356–361 |
| 2 John 1:7 | Commentary on Romans 12:18 · Ambrosiaster | allusion, high confidence | ca. 366–384 |
| 2 John 1:7 | Panarion (Adversus Haereses), Haer. 1-64 24.9.5 · Epiphanius of Salamis | quotation, medium confidence | 374-377 |
| 2 John 1:7 | Eleven Tractates 1.6 · Priscillian | allusion, high confidence | ca. 380–385 |
| 2 John 1:7 | Eleven Tractates 1.37 · Priscillian | quotation, high confidence | ca. 380–385 |
| 2 John 1:7 | Against Faustus the Manichaean 5.4 · Augustine of Hippo | allusion, medium confidence | ca. 398–400 |
| 2 John 1:7 | 2 Timothy 2:8 · Pelagius | allusion, high confidence | ca. 405–410 |
| 2 John 1:8 | Letter 2.300 · Isidore of Pelusium | quotation, high confidence | ca. 393-ca. 435 |
| 2 John 1:8 | Letter 5.144 · Isidore of Pelusium | quotation, high confidence | ca. 393-ca. 435 |
| 2 John 1:9 | On Not Agreeing with Heretics 14 · Lucifer of Cagliari | quotation, high confidence | ca. 356–361 |
| 2 John 1:9 | Book 2, chapter 10 · Hesychius of Jerusalem | quotation, high confidence | ca. 412-450 |
| 2 John 1:10–11 | Against Heresies 1.16.3 · Irenaeus of Lyons | quotation, high confidence | ca. 180–190 |
| 2 John 1:10 | Prescription against Heretics 12 · Tertullian | allusion, low confidence | ca. 203 |
| 2 John 1:10–11 | Opinions of the Bishops 81 · Cyprian of Carthage | quotation, high confidence | 1 September 256 |
| 2 John 1:10 | Letter 2.4 · Alexander of Alexandria | allusion, high confidence | ca. 319–324 |
| 2 John 1:10 | To the Bishops of Egypt 4 · Athanasius of Alexandria | allusion, medium confidence | ca. 356 |
| 2 John 1:10 | Letters 8 · Lucifer of Cagliari | allusion, high confidence | ca. 356–361 |
| 2 John 1:10 | On Not Agreeing with Heretics 14 · Lucifer of Cagliari | allusion, high confidence | ca. 356–361 |
| 2 John 1:10–11 | Against Parmenian the Donatist 4.5 · Optatus of Milevis | quotation, high confidence | ca. 366–385 |
| 2 John 1:10 | Commentary on Romans 12:18 · Ambrosiaster | allusion, high confidence | ca. 366–384 |
| 2 John 1:10 | Letter 89.2 · Jerome | quotation, high confidence | ca. 370–419 |
| 2 John 1:10 | Panarion (Adversus Haereses), Haer. 1-64 26.15.4 · Epiphanius of Salamis | quotation, high confidence | 374-377 |
| 2 John 1:10–11 | On Baptism, against the Donatists 7.88 · Augustine of Hippo | quotation, high confidence | ca. 400–401 |
| 2 John 1:10 | On Baptism, against the Donatists 7.89 · Augustine of Hippo | quotation, high confidence | ca. 400–401 |
| 2 John 1:10 | Book 2, chapter 10 · Hesychius of Jerusalem | quotation, high confidence | ca. 412-450 |
| 2 John 1:10 | Book 7, chapter 25 · Hesychius of Jerusalem | quotation, high confidence | ca. 412-450 |
| 2 John 1:10–11 | Commentary on Jeremiah 3.61 · Jerome | quotation, high confidence | ca. 414-419 |
| 2 John 1:10 | Commonitory 24 · Vincent of Lérins | quotation, high confidence | 434 |
| 2 John 1:10 | Church History 1.6 · Socrates Scholasticus | allusion, high confidence | ca. 439-443 |
| 2 John 1:11 | Letter 2.4 · Alexander of Alexandria | allusion, high confidence | ca. 319–324 |
| 2 John 1:11 | Panarion (Adversus Haereses), Haer. 1-64 34.13.3 · Epiphanius of Salamis | quotation, high confidence | 374-377 |
| 2 John 1:11 | Commonitory 24 · Vincent of Lérins | quotation, high confidence | 434 |
| 2 John 1:11 | Church History 1.6 · Socrates Scholasticus | allusion, high confidence | ca. 439-443 |
| 2 John 1:12 | Against Heresies 3.4.2 · Irenaeus of Lyons | echo, low confidence | ca. 180–190 |
| 2 John 1:12 | Ancoratus 117.1 · Epiphanius of Salamis | allusion, medium confidence | 374 |
| 2 John 10 | Commentary on Luke 12:51 · Cyril of Alexandria | quotation, high confidence | ca. 412-444 |
| 2 John 10 | Book 4, chapter 13 (printed XII in Migne) · Hesychius of Jerusalem | quotation, high confidence | ca. 412-450 |