What does the Bible say about Abraham?

Abraham is referred to as the father of the faithful in Romans 4, where he believed God’s promises even when his circumstances seemed impossible. His significance is highlighted in how believers are called the seed of Abraham, indicating that faith, rather than lineage, defines our relationship with God. As stated in Galatians 3:29, those who belong to Christ are Abraham's seed and heirs according to the promise. Therefore, Abraham symbolizes the faith through which we receive God's grace, regardless of our works.