| 2 Pet 1:5 | Shepherd of Hermas, Similitude 9.15.2 (92.2) · Hermas | echo, low confidence | ca. 100–150 |
| 2 Pet 1:5 | Shepherd of Hermas, Vision 3.8.7 (16.7) · Hermas | echo, medium confidence | ca. 100–150 |
| 2 Pet 1:7 | Shepherd of Hermas, Vision 3.8.7 (16.7) · Hermas | echo, medium confidence | ca. 100–150 |
| 2 Pet 1:10 | Miscellanies 7.11.66 · Clement of Alexandria | quotation, medium confidence | ca. 198–203 |
| 2 Pet 1:16 | Dialogue with Trypho 9.1 · Justin Martyr | echo, medium confidence | ca. 155–160 |
| 2 Pet 1:21 | Dialogue with Trypho 7.1 · Justin Martyr | echo, medium confidence | ca. 155–160 |
| 2 Pet 1:21 | To Autolycus 2.9 · Theophilus of Antioch | allusion, high confidence | ca. 180–185 |
| 2 Pet 2:1 | Dialogue with Trypho 82.1 · Justin Martyr | echo, high confidence | ca. 155–160 |
| 2 Pet 2:2 | Exhortation to the Greeks 10.106 · Clement of Alexandria | quotation, medium confidence | ca. 190–200 |
| 2 Pet 2:4 | Refutation of All Heresies 10.34.2 · Hippolytus of Rome | echo, medium confidence | ca. 222–235 |
| 2 Pet 2:5 | 1 Clement 7.6 · Clement of Rome | echo, medium confidence | ca. 95–97 (range ca. 70–100) |
| 2 Pet 2:5 | 1 Clement 9.4 · Clement of Rome | echo, medium confidence | ca. 95–97 (range ca. 70–100) |
| 2 Pet 2:5 | To Autolycus 3.19 · Theophilus of Antioch | echo, medium confidence | ca. 180–185 |
| 2 Pet 2:5 | Miscellanies 1.21.135 · Clement of Alexandria | echo, medium confidence | ca. 198–203 |
| 2 Pet 2:5 | On the Trinity 8 · Novatian | allusion, medium confidence | ca. 240–250 |
| 2 Pet 2:7 | 1 Clement 11.1 · Clement of Rome | echo, medium confidence | ca. 95–97 (range ca. 70–100) |
| 2 Pet 2:20 | Shepherd of Hermas, Similitude 9.17.5 (94.5) · Hermas | echo, medium confidence | ca. 100–150 |
| 2 Pet 2:22 | Refutation of All Heresies 9.7.3 · Hippolytus of Rome | echo, medium confidence | ca. 222–235 |
| 2 Pet 3:4 | 1 Clement 23.3 · Clement of Rome | echo, medium confidence | ca. 95–97 (range ca. 70–100) |
| 2 Pet 3:7 | Second Apology 6 · Justin Martyr | echo, medium confidence | ca. 150–160 |
| 2 Pet 3:7 | On Baptism 8 · Tertullian | allusion, medium confidence | ca. 198–206 |
| 2 Pet 3:7 | On the Trinity 8 · Novatian | allusion, medium confidence | ca. 240–250 |
| 2 Pet 3:8 | Epistle of Barnabas 15.4 · Anonymous | echo, medium confidence | ca. 70–135 (often ca. 130) |
| 2 Pet 3:8 | Dialogue with Trypho 81.3 · Justin Martyr | echo, high confidence | ca. 155–160 |
| 2 Pet 3:9 | Shepherd of Hermas, Similitude 8.11.1 (77.1) · Hermas | echo, medium confidence | ca. 100–150 |
| 2 Pet 3:9 | First Apology 28 · Justin Martyr | echo, medium confidence | ca. 150–155 |
| 2 Pet 3:9 | Second Apology 6 · Justin Martyr | echo, medium confidence | ca. 150–160 |
| 2 Pet 3:9 | Dialogue with Trypho 39.2 · Justin Martyr | echo, medium confidence | ca. 155–160 |
| 2 Pet 3:9 | Octavius 34.12 · Minucius Felix | echo, low confidence | ca. 197–250 |
| 2 Pet 3:10 | 2 Clement 16.3 · Anonymous | echo, medium confidence | ca. 100–150 |
| 2 Pet 3:10 | Who Is the Rich Man That Is Saved? 37.5 · Clement of Alexandria | echo, low confidence | ca. 190–210 |
| 2 Pet 3:10 | Miscellanies 5.1.9 · Clement of Alexandria | allusion, low confidence | ca. 198–203 |
| 2 Pet 3:10 | Miscellanies 5.14.121 · Clement of Alexandria | echo, medium confidence | ca. 198–203 |
| 2 Pet 3:10 | Octavius 34.5 · Minucius Felix | echo, low confidence | ca. 197–250 |
| 2 Pet 3:10 | On the Shows 30 · Tertullian | allusion, medium confidence | ca. 197–202 |
| 2 Pet 3:12 | 2 Clement 16.3 · Anonymous | echo, medium confidence | ca. 100–150 |
| 2 Pet 3:13 | On the Trinity 2 · Novatian | allusion, low confidence | ca. 240–250 |
| 2 Pet 3:16 | Miscellanies 3.4.39 · Clement of Alexandria | echo, medium confidence | ca. 198–203 |