Adam Clarke on Romans 4:24

But for us also - The mention of this circumstance has a much more extensive design than merely to honor Abraham. It is recorded as the model, according to which God will save both Jews and Gentiles: indeed there can be no other way of salvation; as all have sinned, all must either be saved by faith through Christ Jesus, or finally perish. If God, therefore, will our salvation, it must be by faith; and faith contemplates his promise, and his promise comprehends the Son of his love.