Footnote

b Although this amount of time may seem extensive today, we must remember that human life spans used to be much longer; there were only four lifespans that overlapped from Adam to Abraham. Adam’s life overlapped the life of Lamech, Noah’s father. Lamech’s life overlapped that of Shem, Noah’s son. Shem’s life overlapped that of Abraham.​—Gen. 5:5, 31; 9:29; 11:10, 11; 25:7.