When was Abraham made righteous according to the Bible?

Abraham's righteousness was imputed to him when he believed God's promise, as stated in Romans 4:3. This occurred before he was circumcised, emphasizing that righteousness is not tied to any outward markers or works. Paul clarifies that Abraham's example serves to illustrate that both Jews and Gentiles are justified by faith, without reliance on their actions. By believing God's word, Abraham received God's declaration of righteousness, showcasing that salvation is based solely on faith rather than ritual or law.