What is the spiritual significance of Gods covenant with Abraham in Genesis 12

Therefore, the spiritual significance of the covenant is that believers need to remain faithful to God at all times for Him to bless them abundantly. God wanted to make Abraham’s descendants the great nation that Jesus would come from. As a result God would bless all the nations of the earth through Abraham’s descendants (Genesis 12:3). What was God’s purpose for selecting Israel as his special people? What was God’s ultimate purpose for Israel? God had the purpose of making Jesus the King and he knew that he would come from one of the nations of Israel. This is the main reason as to why God chose Israel as his special people. For instance, Melville claims that the reason as to why men dislike and fear God is that they fancy him for having all the brains and distrusting his heart.