How much time elapsed from Abraham to the cross?
From the call of Abraham to the cross, approximately 2,000 years elapsed. The timeline places Abraham around 2000 B.C., and from his call in Genesis chapter 12 up to the crucifixion spans another 2,000 years, making about 4,000 years from Adam to the cross.
Les explains that the Old Testament timeline runs from Adam at 4004 B.C., through the Flood, and then Abraham at about 2000 B.C. The first 2,000 years of human history are covered in Genesis 1–11, and chapter 12 begins with Abraham. From the call of Abraham all the way to the cross is another 2,000 years, so the elapsed time from Abraham to the crucifixion is roughly two millennia.