Abram was the youngest, for he was only seventy-five years old when his father died ( Genesis 11:32 ; Genesis 12:4 ; Acts 7:1-5 ). Therefore Genesis 11:26 ; that Terah was seventy years old when his first son was born; and from other considerations enumerated above, he was about one hundred thirty years when Abram was born. Sarah was Abram's half-sister ( Genesis 20:12 ), doubtless born of Terah's second marriage. There was only a difference of ten years in their ages ( Genesis 17:17 ). If Abram has been Terah's firstborn, he would have been one hundred thirty-five when Terah died, and it would be necessary to to change the figures in reference to Sarah and make her one hundred twenty-five at this time! Further, it is stated that Abram had been eleven years in Canaan when Ishmael was born ( Genesis 16:1-16 ). This would have made Sarah (125 + 11 = 136) one hundred thirty-six at Ishmael's birth. Isaac was born fourteen years after Ishmael ( Genesis 16:16 ; Genesis 21:1-5 ), hence this would have given Isaac no chance to have been born, for Sarah only lived one hundred twenty-seven years ( Genesis 23:1 )! We therefore conclude that Abram was born two thousand eight years after the creation of Adam ( Genesis 5:3-32 ; Genesis 7:6 Genesis 7:11 ; Genesis 11:1-26 ).
These promises were subsequently renewed on Mount Moriah ( Genesis 22:1-18 ). These promises were subsequently fulfilled in,