When the Lord, our God, was ready to initiate a covenant that would establish His rule in the earth, He looked for a man to make covenant with. The man that God found was Abram, whose name He changed to Abraham. In Genesis chapter 12 the Lord spoke to Abraham and told him to leave his father's house, and Abraham departed as the Lord had spoken to him. By faith, Abraham obeyed God, and it was accounted to him as righteousness and, therefore, the covenant process continued.
Progression is contingent upon man's obedience to the covenant conditions or laws.
It is my opinion that Abraham saw Christ's Day through Melchizedek who was a king and a priest of God Most High. Melchizedek was a type of Christ as seen in the communion elements as he brought bread and wine to Abraham. This great mystery is revealed by the Apostle Paul in Galatians 314-29. And when the vultures came down on the carcasses, Abram drove them away. Then He said to Abram 'Know certainly that your descendants will be strangers in a land that is not theirs, and will serve them, and they will afflict them four hundred years.