How did Abraham's faith exemplify the Christian faith?

In Galatians 3, Paul presents Abraham as the father of all who believe, showcasing that it was his faith that was counted for righteousness, not his works (Genesis 15:6). This exemplifies the union of faith and grace, demonstrating that God's declaration of righteousness is based on belief in His promises, primarily concerning Christ. Just as Abraham was called from paganism and justified by faith alone, all believers partake in this faith journey that acknowledges our inability to fulfill the law and instead rests in the grace provided through Christ's atonement.