It was therefore two thousand five hundred thirteen years and forty-eight days from the creation of Adam to the encampment at Mount Sinai.
The first promise of the Redeemer was made to Abram ( Genesis 12:1-3 Acts 3:25 Acts 3:26 ; Galatians 3:8 Galatians 3:16 ). This confined the development of God's purpose to an individual. God also promised to make of Abraham a great nation, and in order to do this He promise him a son by his wife Sarah, and an innumerable posterity ( Genesis 15:1-13 ). In order to the maintenance and perpetuity of this nation He promised Abraham a country, set its bounds ( Genesis 15:18-21 ), and gave him circumcision as the national mark of distinction ( Genesis 17:1-14 ). From Abraham forward therefore, these people became the repositories of the oracles of God ( Romans 3:1 Romans 3:2 ). The promises were renewed to Abraham on Mount Moriah ( Genesis 22:1-18 ), to Isaac at Gerar ( Genesis 26:1-6 ), to Jacob at Bethel ( Genesis 28:10-19 ; Lord spoke to Jacob at Beersheba ( Genesis 46:1-4 ), but at Mount Sinai He spoke to the whole nation ( Exodus 19:1-25 ; Exodus 20:1-22 ).