The Book of Genesis and the Gospel of Luke provide the best known biblical genealogies of Abraham. Luke follows Genesis fairly closely, but inserts an additional ancestor for theological reasons. The two genealogies follow:
| Genesis |
| Luke |
| 20 | Abraham | 21 | Abraham |
| 19 | Terah | 20 | Terah |
| 18 | Nahor | 19 | Nahor |
| 17 | Serug | 18 | Serug |
| 16 | Reu | 17 | Reu |
| 15 | Peleg | 16 | Peleg |
| 14 | Eber | 15 | Eber |
| 13 | Shelah | 14 | Shelah |
| | 13 | Kainan |
| 12 | Arphaxad | 12 | Arphaxad |
| 11 | Shem | 11 | Shem |
| 10 | Noah | 10 | Noah |
| 9 | Lamech | 9 | Lamech |
| 8 | Methuselah | 8 | Methuselah |
| 7 | Enoch | 7 | Enoch |
| 6 | Jared | 6 | Jared |
| 5 | Mahalalel | 5 | Mahalalel |
| 4 | Kenan | 4 | Kenan |
| 3 | Enosh | 3 | Enosh |
| 2 | Seth | 2 | Seth |
| 1 | Adam | 1 | Adam |