Any Jew who did not keep the law was cast out. Failure to keep it sometimes even meant death. And as Paul explained it, the law was a "schoolmaster" or custodian whose purpose was to bring the nation to the point where their Messiah could come, and though the law could never save anyone, they were required to keep it nonetheless.
But when you keep equating salvation before Jesus with salvation after, you've been arguing is that people could be saved by faith in Jesus' resurrection before it even happened. Thus there are two "gospel" messages: one of the kingdom promised to the nation of Israel, and the other of the resurrection of Jesus from the dead. The former was before Jesus rose again; the latter was after. These cannot be mixed, as they are two different covenants.
It seems to me that you are arguing against what you assume I mean. You said,
But when you keep equating salvation before Jesus with salvation after, you've been arguing is that people could be saved by faith in Jesus' resurrection before it even happened.
Please show me where I have made this argument. I said salvation has always been through faith, thorough an obedient, loving faithful relationship with God. Where in that statement do you see the statement you made. Everyone in the OT was saved through faith. Hebrews chapter 11 is full of OT saints who "by faith" were obedient and now await the promises. Jesus preached the Gospel of the kingdom and the 12 apostles preached the Gospel of the kingdom, and Paul preached the Gospel of the kingdom, One Gospel, not two. Paul said he preached nothing other than what the prophets and Moses said would come.
KJV Acts 26:22 Having therefore obtained help of God, I continue unto this day, witnessing both to small and great, saying none other things than those which the prophets and Moses did say should come: (Act 26:22 KJV)
4 Then said Paul, John verily baptized with the baptism of repentance, saying unto the people, that they should believe on him which should come after him, that is, on Christ Jesus.
5 When they heard this, they were baptized in the name of the Lord Jesus.
6 And when Paul had laid his hands upon them, the Holy Ghost came on them; and they spake with tongues, and prophesied.
7 And all the men were about twelve.
8 And he went into the synagogue, and spake boldly for the space of three months, disputing and persuading the things concerning the kingdom of God. (Act 19:4-8 KJV)
25 And now, behold, I know that ye all, among whom I have gone preaching the kingdom of God, shall see my face no more. (Act 20:25 KJV)
17 And it came to pass, that after three days Paul called the chief of the Jews together: and when they were come together, he said unto them, Men and brethren, though I have committed nothing against the people, or customs of our fathers, yet was I delivered prisoner from Jerusalem into the hands of the Romans.
18 Who, when they had examined me, would have let me go, because there was no cause of death in me.
19 But when the Jews spake against it, I was constrained to appeal unto Caesar; not that I had ought to accuse my nation of.
20 For this cause therefore have I called for you, to see you, and to speak with you: because that for the hope of Israel I am bound with this chain.
21 And they said unto him, We neither received letters out of Judaea concerning thee, neither any of the brethren that came shewed or spake any harm of thee.
22 But we desire to hear of thee what thou thinkest: for as concerning this sect, we know that every where it is spoken against.
23 And when they had appointed him a day, there came many to him into his lodging; to whom he expounded and testified the kingdom of God, persuading them concerning Jesus, both out of the law of Moses, and out of the prophets, from morning till evening.
(Act 28:17-23 KJV)
30 And Paul dwelt two whole years in his own hired house, and received all that came in unto him,
31 Preaching the kingdom of God, and teaching those things which concern the Lord Jesus Christ, with all confidence, no man forbidding him.
(Act 28:30-31 KJV)
Eph. 2:8-9 says point blank that we are saved by grace through faith, not of works. Paul explained also that grace is not wages, and faith is not work. Abraham was considered righteous because he believed God, nothing else.
Earlier in the thread you were commenting on context. If you look at this passage in context you'll see Paul is referring to the works of the Mosaic Law.
But, even so, this doesn't prove faith alone.