Foreshadowing the rest from works for salvation we would find in Christ.
The 7th day is yes, a foreshadowing of the 7th millennium. Each time we seven ourselves with the LORD, we are acknowledging YHWH/LORD's plans for mankind. Man was given 6 millennials to do it his way. He has proven to be an utter failure at ruling. So comes the 7th millennium and there we will experience God's way.
Works in OT and NT was never for salvation. Grace has been with us since the very beginning.
Christians work - bus ministry - choir - door greeter - deacons - teachers - visitation ministry - secretary -youth ministry - nursery - yard maintenance - janitorial - pew warmer - audience - music - foreign missions - quilters - etc. etc.
Works is what makes the church ministry survive as a unified body and is only the fruit of your dedication to that body of believers.
So what works for the LORD are for salvation? I can't think of any, unless you include repentance, baptism, and being Holy Spirit guided and obedience to the commandments/laws/instructions.
Fruits of the spirit are
Galatians 5:22 But the fruit of the Spirit is love, joy, peace, longsuffering, gentleness, goodness, faith,
Gal 5:23 Meekness, temperance: against such there is no law.
Ephesians 5:9 (For the fruit of the Spirit is in all goodness and righteousness and truth
Psalms 119:142 Thy righteousness is an everlasting righteousness, and
thy law is the truth.
Psalms 119:151 Thou art near, O LORD; and all
thy commandments are truth.
What does the Bible say "love" is?
1Jn_4:7 Beloved, let us love one another:
for love is of God; and every one that loveth is born of God,
and knoweth God.
Mal 3:6
For I am the LORD, I change not; therefore ye sons of Jacob are not consumed.
7 Even from the days of your fathers ye are gone away from mine ordinances, and
have not kept them. Return unto me, and I will return unto you, saith the LORD of hosts. But ye said,
Wherein shall we return?
Deuteronomy 7:9 Know therefore that the LORD thy God, he is God, the faithful God, which
keepeth covenant and mercy with
them that love him and keep his commandments to a thousand generations;
Deu 7:10 And repayeth them that hate him to their face, to destroy them: he will not be slack to him that hateth him, he will repay him to his face.
Deu 7:11 Thou shalt therefore
keep the commandments, and the statutes, and the judgments, which I command thee this day,
to do them.
Mat 23:2 Saying, The scribes and the Pharisees sit in Moses' seat: (Literal word for word reading from the Torah/1st five books)
Mat 23:3
All therefore whatsoever they bid you observe, that observe and do; but do not ye after their works: for they say, and do not.
Mat_15:3 But he answered and said unto them, Why do ye also transgress the commandment of God by your tradition?
G3862
παράδοσις = 666 (Greek gematria)
paradosis
par-ad’-os-is
From G3860; transmission, that is, (concretely) a precept; specifically the Jewish traditionary law: - ordinance, tradition.
Jewish traditionary law is not the law of the LORD!! It is adding to and diminishing to God's laws (called oral laws and Talmud). It is the placing of tradition above the laws of God and the one who is enforcing the tradition is greater than God (so they believe).
Christians are also guilty of traditions that diminish God's law. Instead of Passover, there is Easter. Instead of Feast of Trumpets, there is Christmas. Instead of the Sabbath, there is Sunday. Instead of unity, there is division. (43,000 and growing number of denominations). Man-made traditions that bind you from seeing and hearing truth which is commandments and laws and reveals the very character of the LORD/YHWH.
Revelation 12:9 And the great dragon was cast out, that old serpent, called the Devil, and Satan,
which deceiveth the whole world: he was cast out into the earth, and his angels were cast out with him.
2Thessalonians 2:9 Even him, whose coming is after the working of Satan with all power and signs and lying wonders,
10 And with all deceivableness of unrighteousness in them that perish; because they received not the love of the truth
(thy commandments and laws are TRUTH) , that they might be saved.