Two questions for everyone.
1st question: In what way are new moons and sabbaths a shadow? In other words, how is Christ the 'substance' of a moon or a sabbath?
I believe the sabbath day (week) is a shadow of the time line of Earth. Supposing that each day is equivalent to 1,000 years. Biblical numerology holds the number 6 as the number of man. 7 is the number of God. the seventh day is the sabbath day. If each day is 1,000 years, what other biblical day is 1,000 years in duration? The millennial sabbath. So, I believe the "sabbath" will be fulfilled with the millennial kingdom and the establishment of His kingdom.
As for the New Moon, I am not quite sure atm what that is a shadow for. Somehow it really hasnt crossed my mind yet. Going to definitely ponder on that one. Hopefully the Holy Spirit will teach me what the meaning of it is.
The seven feast days given in the Torah are also shadows of Christ.
Passover/Feast of unleavened bread is obviously about the crucifixion, purging of sins, and repentance (casting out the old leaven)
Yom Kippur means the day of atonement and is quite obvious what that is about.
Yom Teruah/ Feast of trumpets/shoutings I believe is actually the day of the year --whatsoever year it may be-- when Christ returns and gathers his people with the trumpet blast; the fist resurrection which is of the righteous dead.
Sukkoat/feast of tabernacles was when the "Word became flesh and tabernacled among us" (See the feast of tabernacles and also recollect how the Ark of the Covenant was tabernacled before the temple was built) Sukkoat will also be fulfilled when the New Jerusalem is established and we dwell in his presence.
The counting of the omer culminating in Shavuot /"first fruits" was obviously fulfilled at pentecost.
(unleavened bread and sukkoat each have 2 high sabbaths so that is why the list is 2 shy of 7)
2nd question: If moons and sabbaths are a shadow and Christ is the 'substance,' is there any value in observing moons or sabbath? (By this, I assume it means both weekly and/or yearly sabbaths)
Cyberseeker
Yes, if you are honoring God by doing so in the Newness of the Spirit and not just after the old letter (which I assume you are asking after the Spirit.)
Will he who does be thought of as any less than he who does not? If we are free to not keep the things contained in the Law; does that then mean we are forbidden to do them if we so chose? God forbid. If we do it with the right motive, it honors God. If not, then your worship is vanity.
5One man esteemeth one day above another: another esteemeth every day alike. Let every man be fully persuaded in his own mind.
6He that regardeth the day, regardeth it unto the Lord; and he that regardeth not the day, to the Lord he doth not regard it. He that eateth, eateth to the Lord, for he giveth God thanks; and he that eateth not, to the Lord he eateth not, and giveth God thanks. -Romans 14:5-6