What does the Bible say about God's covenant with Abraham?

In Genesis, we see numerous promises made by God to Abraham, highlighting His intention to form a great nation from his lineage, which includes the promise of land and a son, Isaac. Abraham's faith in God's promises is evidenced in Genesis 15:8, where he asks how he can be sure of inheriting the land. This leads to the covenant ritual where God, through a solemn ceremony, reassures Abraham of His faithfulness by passing through the divided animals, signifying the unbreakable nature of His commitment. God's covenant was ultimately fulfilled in Christ, emphasizing that through faith in Him, believers become heirs to these promises, as affirmed in Galatians 3:29.