'Justified by Works' in the Bible

For, if Abraham was justified by works, he has ground of boasting, but not toward God.

yet knowing that a man is not justified by works of law, but through faith in Jesus Christ, even we believed on Christ Jesus, that we might be justified by faith in Christ, and not by works of law; because by works of law no flesh shall be justified.

Was not Abraham, our father, justified by works, when he offered up Isaac his son on the altar?

And, in like manner, was not also Rahab the harlot justified by works, when she received the messengers, and sent them out by another way?