After the Flood, Noah and his family repopulated the earth. One of Noah’s descendants (through his son Shem) was Abraham. God promised to make Abraham the patriarch of nations. Through him all the peoples of the earth would be blessed. God’s great blessings came to Abraham, as they often do with us, through the great sacrifice of obedience. Abraham had to leave his home, much of his family, and his culture. Later, he had to trust God for a son in his old age. The most challenging sacrifice that God required was by far the greatest, but Abraham passed the test with flying colors.