'Justified' in the Bible

Was our father Abraham not [shown to be] justified by works [of obedience which expressed his faith] when he offered Isaac his son on the altar [as a sacrifice to God]?

You see that a man (believer) is justified by works and not by faith alone [that is, by acts of obedience a born-again believer reveals his faith].

In the same way, was Rahab the prostitute not justified by works too, when she received the [Hebrew] spies as guests and protected them, and sent them away [to escape] by a different route?