It has been a while since I last posted, so I will take this opportunity to jump on a bandwagon.
I believe that some instances of the expression "faith in Christ" or "faith in Jesus Christ" in the New Testament are in fact references to his faith-fulness (to the Covenant of Grace) shown in his death and resurrection.
Let's have a look at one text where this is particularly evident:
nevertheless knowing that
(A) a man is not justified by the works of the Law
(B) - - but through faith of Christ Jesus
(C) - - - - even we have believed in Christ Jesus
(B) - - so that we may be justified by faith of Christ
(A) and not by the works of the Law
since by the works of the Law no flesh will be justified
If Paul is referring to our faith in Christ in the B sections, then Paul is saying the same thing three times in a row! However, if Paul is referring to Christ's faith, then the chiasm works just fine. Structure really can be a useful tool when it comes to understanding the bible.