God made promises to Abraham, Isaac, Jacob and his seed. Promises that included a land grant stretching form the nile river in Egypt to the river Euphrates in Iraq. Abraham never actually received the land God had promised him. This implies that God will raise him from the grave to give him the land, and eternal possession implies God will give him eternal life. Abraham’s purchase of a burying plot for his wife in Genesis 23:13 is another verse proving he never received the land God promised him. See also Acts 7:5
These promises are referenced all throughout Scripture
The promises to Abraham, Isaac and Jacob (also referred to as “the fathers”) are mentioned all throughout scripture in the Old Testament and New showing how important they were to the Jews. The only covenant God ever made with man which offered him eternal salvation is the promises made to Abraham which are fulfilled in the work of his seed, Jesus Christ. Belief and Baptism into Jesus Christ grafts us into the seed of Abraham and the promises God made to him (you can see this in Galatians 3:27-29).
Have the promises been fulfilled?
Some Churches believe that God has already fulfilled those promises, but he has not. The nation of Israel’s existence in the land of Israel then and now is a partial fulfillment of the promise God made to Abraham, Isaac and Jacob. It is partial because they (the “fathers”) themselves actually never possessed the land and God’s promise won’t be fulfilled until he raises them from their graves and gives it to them. See Luke 20:37, Hebrews 11:9 and Hebrews 11:13
Please read the document below which lists bible verses about Abraham.