Why is Abraham called the father of faith?

Abraham's designation as the father of faith is rooted in his trust in God's promises, even amidst his failures and sins. In Romans 4, Paul emphasizes that Abraham was justified by faith before the Law was given, highlighting that faith is the means through which God imparts righteousness. Despite moments of fear and deceit, like when he misrepresented his relationship with Sarah, Abraham’s faith remained central to his identity. His journey illustrates how God’s grace works in the lives of those whom He has chosen, serving as a model for believers today in their struggles and reliance on divine grace.