Your understanding of these verses are wrong.
Not hard to understand a clear cut statement that no man is to judge me concerning holy days. If you judge me because I do not keep the Sabbath, then you violate that teaching.
They are saying don't let anybody judge your for keeping or for how you keep them. Not for not keeping them.
It covers all of that. I will not judge you, or anyone else if you feel you have to keep the Sabbath. Jews are nowhere in Scripture told they are to forsake their heritage, so I view nothing wrong with a Jewish believer observing the Sabbath.
It's when you say "You must keep the Sabbath" that one violates the Word of God.
They weren't in the first place as gentiles
You think Paul was telling them something that did not apply to them? Now that is a remarkable thing.
Believe it or not...Gentiles have holy days as well. And whether they are legitimate or not, we still go back to we are not to judge men concerning holy days.
Torah law:
Lev 23:3 ‘Six days work is done, but the seventh day is a Sabbath of rest, a set-apart gathering. You do no work, it is a Sabbath to יהוה in all your dwellings.
Lev 23:4 ‘These are the appointed times of יהוה, set-apart gatherings which you are to proclaim at their appointed times.
So show me where that negates the teachings of the New Testament for Christians.
You honestly think nobody was ever saved in the OT?
I didn't say that, lol.
From an eternal perspective, those who were justified by faith were "saved" in the sense that their eternal destiny was secure, however, there is a big difference between being justified by faith as an Old Testament believer and the Old Testament believer being redeemed by Christ, his sins atoned for by Christ's Sacrifice, and having received the Promise of the New Birth and Eternal Indwelling of God.
Its a rather complicated issue but one in which, if more people understood, we would see far less confusion as to what the revelation of the New Testament means.
To begin we could look at Ezekiel 36:24-27 and note that this is a promise, it has not happened yet. We can focus on the promise of the indwelling of God, and look to Christ's Own teachings which show that it has still not been fulfilled here:
John 14:15-18
King James Version (KJV)
15 If ye love me, keep my commandments.
16 And I will pray the Father, and he shall give you another Comforter, that he may abide with you for ever;
17 Even the Spirit of truth; whom the world cannot receive, because it seeth him not, neither knoweth him: but ye know him; for he dwelleth with you, and shall be in you.
18 I will not leave you comfortless: I will come to you.
We can say without controversy that this had not happened yet. For this to be fulfilled it was necessary that what He says is going to happen, that He is going to leave, must happen first. We see the Unity of the Son of God (Jesus), the Spirit of God (the Comforter), and God the Father in this chapter, first noting Christ states when He sends the Spirit "He will come."
Then...
John 14:20-23
King James Version (KJV)
20 At that day ye shall know that I am in my Father, and ye in me, and I in you.
21 He that hath my commandments, and keepeth them, he it is that loveth me: and he that loveth me shall be loved of my Father, and I will love him, and will manifest myself to him.
22 Judas saith unto him, not Iscariot, Lord, how is it that thou wilt manifest thyself unto us, and not unto the world?
23 Jesus answered and said unto him, If a man love me, he will keep my words: and my Father will love him, and we will come unto him, and make our abode with him.
The unity of the Father, Son, and Holy Ghost, and how that relates to Eternal Indwelling has to be understood. We see that Christ speaks of what is going to happen, which makes it clear...it was not happening at the time He is giving the teaching.
I am out of time, so will just post a few more passages on this issue, in which we seek to clarify the distinctive and dramatic difference of the Ministry of God in the hearts and lives of men in Old Testament Eras and how He ministers today:
John 7:38-39
King James Version (KJV)
38 He that believeth on me, as the scripture hath said, out of his belly shall flow rivers of living water.
39 (But this spake he of the Spirit, which they that believe on him should receive: for the Holy Ghost was not yet given; because that Jesus was not yet glorified.)
No-one had yet received the Promise of the Spirit, and would not until Christ was glorified (which is best viewed as fulfillment of John 17 in which we see the Son of God restored to the Glory He had with the Father before the foundation of the world).
Again, in this next passage...
Acts 1:4-5
King James Version (KJV)
4 And, being assembled together with them, commanded them that they should not depart from Jerusalem, but wait for the promise of the Father, which, saith he, ye have heard of me.
5 For John truly baptized with water; but ye shall be baptized with the Holy Ghost not many days hence.
A few points to consider is that the Promise of the Father which they heard of Christ (was taught by Him, which we just looked at an example in John 14, and can also consult John 15-16 (though 15 is limited)), is defined as the "Baptism with the Holy Ghost." John the Baptist clarifies that Christ is the Baptizer Who will Baptize with the Spirit, and so we seek to understand what this means.
I will suggest to you that in view is without question "the Promise of the Father," which is the indwelling of God on an eternal basis. "Baptism" speaks of identification with the Baptizer, cleansing, and immersion.
In other words, we are "immersed into God." That is what was promised, and we see the Spirit come in Acts 2.
So to answer your question...
You honestly think nobody was ever saved in the OT?
Yes, men like Noah, Abraham, Moses, and David were "saved," but, they had not yet obtained Eternal Redemption through the offering of Christ:
Hebrews 9:12-15
King James Version (KJV)
12 Neither by the blood of goats and calves, but by his own blood he entered in once into the holy place, having obtained eternal redemption for us.
13 For if the blood of bulls and of goats, and the ashes of an heifer sprinkling the unclean, sanctifieth to the purifying of the flesh:
14 How much more shall the blood of Christ, who through the eternal Spirit offered himself without spot to God, purge your conscience from dead works to serve the living God?
15 And for this cause he is the mediator of the new testament, that by means of death, for the redemption of the transgressions that were under the first testament, they which are called might receive the promise of eternal inheritance.
Continued...