I posted the context which clearly points out the weekly Sabbath was included.
So when you say you go by Scripture, you should look at Scripture. This listing of holy times was already known from the OT, and included the Sabbath.
The same is true in Numbers 28, 29.
And yes, the Sabbath included sacrifices. It is an appointed time by definition.
He connects it to the Exodus from Egypt as well, but all of this is in the context of the covenant with Israel.
Exodus explains God giving the commandment which is to be remembered to honor the Creator and Redeemer of Israel.
Genesis explains the 7th day was made holy, but this too is in the context of the writings given to Israel.
Moses indicates that God blessed the 7th day as a memorial to creation. He is referring back to Exodus, as Genesis was written in the context of Israel as well.
And we see that the Sabbath was also a sign with Israel of God sanctifying them. It was in the covenant document with them.
Exodus 31:12-18
12 And the LORD spoke to Moses, saying, 13 “Speak also to the children of Israel, saying: Surely My Sabbaths you shall keep, for it is a sign between Me and you throughout your generations, that you may know that I am the LORD who sanctifies you. 14 You shall keep the Sabbath, therefore, for it is holy to you. Everyone who profanes it shall surely be put to death; for whoever does any work on it, that person shall be cut off from among his people. 15 Work shall be done for six days, but the seventh is the Sabbath of rest, holy to the LORD. Whoever does any work on the Sabbath day, he shall surely be put to death. 16 Therefore the children of Israel shall keep the Sabbath, to observe the Sabbath throughout their generations as a perpetual covenant. 17 It is a sign between Me and the children of Israel forever; for in six days the LORD made the heavens and the earth, and on the seventh day He rested and was refreshed.’ ”
18 And when He had made an end of speaking with him on Mount Sinai, He gave Moses two tablets of the Testimony, tablets of stone, written with the finger of God. (NKJV)
He says clearly that the Sabbath is a sign with Israel. But the Scriptures also say that the same covenant was NOT given before then.
Deuteronomy 5:1-4
1 And Moses called all Israel, and said to them: “Hear, O Israel, the statutes and judgments which I speak in your hearing today, that you may learn them and be careful to observe them. 2 The LORD our God made a covenant with us in Horeb. 3 The LORD did not make this covenant with our fathers, but with us, those who are here today, all of us who are alive. 4 The LORD talked with you face to face on the mountain from the midst of the fire. (NKJV)
The covenant was with Israel at Horeb. It was NOT made with their fathers before.
In other words, it is not an argument from silence that they didn't keep the Sabbath before. It is plainly said this covenant with Israel was something new. And the Sabbath was a sign with Israel.
It was in the context of the covenant with that people that the Sabbath was given, not only to remind them of their Creator, but their liberation from Egypt:
Deuteronomy 5:12-15
12 Observe the Sabbath day, to keep it holy, as the LORD your God commanded you. 13 Six days you shall labor and do all your work, 14 but the seventh day is the Sabbath of the LORD your God. In it you shall do no work: you, nor your son, nor your daughter, nor your male servant, nor your female servant, nor your ox, nor your donkey, nor any of your cattle, nor your stranger who is within your gates, that your male servant and your female servant may rest as well as you. 15 And remember that you were a slave in the land of Egypt, and the LORD your God brought you out from there by a mighty hand and by an outstretched arm; therefore the LORD your God commanded you to keep the Sabbath day. (NKJV)
Adventists speak of moral and ceremonial law, though both were required of Israel. But if you speak of moral and ceremonial, the Sabbath is clearly ceremonial. It points to creation, liberation from Egypt, to sanctification, it is a memorial. It has sacrifices associated with it, as do the other appointed times.
There is no sacrifice associated with thou shalt not kill, or thou shalt not steal, because they are not ceremonial memorials.
We see also in Ezekiel 20 that God makes a distinction between the laws by which one shall live and the sign of the Sabbath given to Israel in addition to those laws:
Ezekiel 20:10-12
10 “Therefore I made them go out of the land of Egypt and brought them into the wilderness. 11 And I gave them My statutes and showed them My judgments, which, if a man does, he shall live by them.’ 12 Moreover I also gave them My Sabbaths, to be a sign between them and Me, that they might know that I am the LORD who sanctifies them. (NKJV)
Now we do indeed see those who were gentiles and joined themselves to Israel keeping the Sabbath.
But the Acts council, reiterated in Acts 21 again, did not require the gentiles to be circumcised and keep the whole law of Moses.
So when Paul says let no one judge you in regards to food or drink, or a feast or a new mooon or a sabbath, he said these things were shadows of things to come, and the substance is Christ.
Colossians 2:16-17
16 So let no one judge you in food or in drink, or regarding a festival or a new moon or sabbaths, 17 which are a shadow of things to come, but the substance is of Christ. (NKJV)
And he said in Romans 14:
Romans 14:5-6
5 One person esteems one day above another; another esteems every day alike. Let each be fully convinced in his own mind. 6 He who observes the day, observes it to the Lord; and he who does not observe the day, to the Lord he does not observe it. (NKJV)
This is a broad principle which Adventists try to limit. But he didn't limit it.
The Israelite Christians went right on keeping the law, as it pointed to Christ. That was best for them to reach non-believing Jews. They were zealous for the whole law (even the part Adventists are not).
However, they didn't require the gentiles to keep the whole law. And this was best for them, as being circumcised and making pilgrimage three times a year was not given to Gentiles, and would not help them in their evangelism towards them.
Acts 21:20-25
20 And when they heard it, they glorified the Lord. And they said to him, “You see, brother, how many myriads of Jews there are who have believed, and they are all zealous for the law; 21 but they have been informed about you that you teach all the Jews who are among the Gentiles to forsake Moses, saying that they ought not to circumcise their children nor to walk according to the customs. 22 What then? The assembly must certainly meet, for they will hear that you have come. 23 Therefore do what we tell you: We have four men who have taken a vow. 24 Take them and be purified with them, and pay their expenses so that they may shave their heads, and that all may know that those things of which they were informed concerning you are nothing, but that you yourself also walk orderly and keep the law. 25 But concerning the Gentiles who believe, we have written and decided that they should observe no such thing, except that they should keep themselves from things offered to idols, from blood, from things strangled, and from sexual immorality.” (NKJV)
Notice also that the Jewish believers in Jerusalem were still observing the rites around vows, sacrifices, etc. while the sanctuary still stood, but they did so knowing they pointed to Christ.
They did not require circumcision and keeping the whole law for gentiles. This referred back to the council:
Acts 15:5
5 But some of the sect of the Pharisees who believed rose up, saying, “It is necessary to circumcise them, and to command them to keep the law of Moses.” (NKJV)
Acts 15:23-26
23 They wrote this letter by them:
The apostles, the elders, and the brethren,
To the brethren who are of the Gentiles in Antioch, Syria, and Cilicia:
Greetings.
24 Since we have heard that some who went out from us have troubled you with words, unsettling your souls, saying, “You must be circumcised and keep the law”—to whom we gave no such commandment— 25 it seemed good to us, being assembled with one accord, to send chosen men to you with our beloved Barnabas and Paul, 26 men who have risked their lives for the name of our Lord Jesus Christ. (NKJV)
You have it backwards of course. Those appointed times are a shadow pointing to Christ. Of course God will not be a shadow of anything.
But the law is a shadow:
Hebrews 10:1
1 For the law, having a shadow of the good things to come, and not the very image of the things, can never with these same sacrifices, which they offer continually year by year, make those who approach perfect. (NKJV)
You ignored the OT context. And you are the one who twisted the claim. God is not a shadow. The appointed times are.