He promise that he would favor and protect Abraham's descendants.
Additionally
The context of this in Bible in book of Genesis shows an everlasting covenant between God and all of Abraham's descendants for all generations and an everlasting possession of the land of Canaan.
Genesis 17:4-8
"As for me, this is my covenant with you: You will be the father of many nations. No longer will you be called Abram; your name will be Abraham, for I have made you a father of many nations. I will establish my covenant as an everlasting covenant between me and you and your descendants after you for the generations to come, to be your God and the God of your descendants after you. The whole land of Canaan, where you now reside as a foreigner, I will give as an everlasting possession to you and your descendants after you; and I will be their God."
Before God changed his name to Abraham, it was Abram.
Abraham was very old in Genesis chapter 15.
You can find it in the book of Genesis. (Gen. 11) God calls upon Abram because he obeys God and will become one of God's favorite people. God tells Abram to do something, and he will do it. He almost sacrifices his own son! Later, God changes Abram's name to Abraham.
abraham promised him a child to love and worship.
The name Abram means "Exalted Father". This was changed during the narrative in the Book of Genesis to Abraham, which means "Father of many". The story describes God as promising Abraham that he would be the father of many nations, and goes on to describing his descendants as founding different nations in the Near East.
The name Abram was changed to Abraham by God in the Bible. Abram means "exalted father" in Hebrew, while Abraham means "father of a multitude" or "father of many nations." Abraham is the name by which he is most commonly known in biblical stories.
God renamed him Abraham (from Abram) when he was living in Canaan (Israel).
A firepot and a torch passed between Abram's sacrifices after he had questioned God about His promises because by passing between the halves of the sacrifices, God was swearing a covenant oath with Abram, solemnly promising that the land would be his.
Abraham (or as he was called before God changed his name: Abram)
God changed Abram's name to Abraham and Sarai's name to Sarah as a sign of their new identities and the covenant He made with them. It symbolized their transformation and the promises God had for them.
Abraham first appears in The Bible as Abram, but later God renamed him Abraham. It means "father of many nations."
God changed the name of Abram (meaning "exalted father") to Abraham ("father of many nations") . God names people what they are: Abram had only1 child [ie Ishmael], but Abraham was to have many descendants and many nations coming from them:-Gen 17:1-5 KJV And when Abram was ninety years old and nine, the LORD appeared to Abram, and said unto him, I am the Almighty God; walk before me, and be thou perfect. (v.2) And I will make my covenant between me and thee, and will multiply thee exceedingly. (v.3) And Abram fell on his face: and God talked with him, saying, (v.4) As for me, behold, my covenant is with thee, and thou shalt be a father of many nations. (v.5)Neither shall thy name any more be called Abram, but thy name shall be Abraham; for a father of many nations have I made thee.