How do we know Abraham's faith was enough for justification?
Answered in 1 source
Abraham's faith led to his justification because he believed God's promise, which was ultimately fulfilled in Christ.
The confirmation of Abraham's justification through faith is encapsulated in the phrase: 'Abraham believed God, and it was counted to him for righteousness' (Romans 4:3). This is rooted in Genesis 15:6, indicating that Abraham's faith was not about the magnitude of his belief but rather about the object of his belief—God's promise regarding the coming Messiah. Abraham recognized that his righteousness was not self-derived but was imputed to him through faith in Christ, who would bear his sins. Thus, his faith in God's promise provided him the grounds for righteousness before God, illustrating the principle that justification is always by grace through faith.
Commentary