Where's that?

"For as many are of the works of the law are under the curse; for it is written, "cursed is everyone who does not continue in all things which are written in the book, to do them." But that no one is justified by the law in the site of God is evident, for "The just shall live by faith." Yet the law is not of faith, but "the man who does them shall live by them." For if there had been a law given which could have given life, truly righteousness would have been by the law. But before faith came, we were kept under guard by the law, kept for the faith which would afterword be revealed. Therefore the law was our tutor to bring us to Christ, that we might be justified by faith. But after faith has come, we are no longer after a tutor."