I was distracted for a moment by playing with a small spider on my screen, chasing him around with my mouse.
Read the rest of the sentence: that we might be justified by the faith of Jesus Christ.
OK, spider-man a few translations do have "justified by the faith of Jesus Christ". Here are some others:
New International Version
know that a person is not justified by the works of the law, but by faith in Jesus Christ. So we, too, have put our faith in Christ Jesus that we may be justified by faith in Christ and not by the works of the law, because by the works of the law no one will be justified.
English Standard Version
yet we know that a person is not justified by works of the law but through faith in Jesus Christ, so we also have believed in Christ Jesus, in order to be justified by faith in Christ and not by works of the law, because by works of the law no one will be justified.
Berean Study Bible
know that a man is not justified by works of the law, but by faith in Jesus Christ. So we, too, have believed in Christ Jesus, that we may be justified by faith in Christ and not by works of the law, because by works of the law no one will be justified.
Berean Literal Bible
nevertheless knowing that a man is not justified by works of law, except through faith from Jesus Christ, even we have believed in Christ Jesus that we may be justified by faith from Christ, and not by works of the Law, because by works of the Law not any flesh will be justified.
New King James Version
knowing that a man is not justified by the works of the law but by faith in Jesus Christ, even we have believed in Christ Jesus, that we might be justified by faith in Christ and not by the works of the law; for by the works of the law no flesh shall be justified.
New American Standard Bible
nevertheless, knowing that a person is not justified by works of the Law but through faith in Christ Jesus, even we have believed in Christ Jesus, so that we may be justified by faith in Christ and not by works of the Law; since by works of the Law no flesh will be justified.
Christian Standard Bible
and yet because we know that a person is not justified by the works of the law but by faith in Jesus Christ, even we ourselves have believed in Christ Jesus. This was so that we might be justified by faith in Christ and not by the works of the law, because by the works of the law no human being will be justified.
Holman Christian Standard Bible
know that no one is justified by the works of the law but by faith in Jesus Christ. And we have believed in Christ Jesus so that we might be justified by faith in Christ and not by the works of the law, because by the works of the law no human being will be justified.
American Standard Version
yet knowing that a man is not justified by the works of the 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 the works of the law: because by the works of the law shall no flesh be justified.
New American Bible
[yet] who know that a person is not justified by works of the law but through faith in Jesus Christ, even we have believed in Christ Jesus that we may be justified by faith in Christ and not by works of the law, because by works of the law no one will be justified.
New Revised Standard Version
yet we know that a person is justified not by the works of the law but through faith in Jesus Christ. And we have come to believe in Christ Jesus, so that we might be justified by faith in Christ, and not by doing the works of the law, because no one will be justified by the works of the law.
New Heart English Bible
yet knowing that no one is justified by the works of the law but through faith in Jesus Christ, even we believed in Christ Jesus, that we might be justified by faith in Christ, and not by the works of the law, because no flesh will be justified by the works of the law.
World English Bible
yet knowing that a man is not justified by the works of the law but through faith in Jesus Christ, even we believed in Christ Jesus, that we might be justified by faith in Christ, and not by the works of the law, because no flesh will be justified by the works of the law.
Out of 25 translations, here are 13 translations all sayin the same thing.
Sure, you and cherry pick your favorite translation, as if it's the only one, or only legitimate one, but that doesn't fly.
These 13 translations represent a lot of Greek scholars. You cannot prove that the KJV is correct and these 13 are wrong.
We believe in the fact that Jesus Christ's faith is what justified us. not our faith.
All the translators of the 13 above would say "nonsense".
OUR faith is because of OUR believing (Rom 10:10).