Is Colossians 2:16 addressing “ceremonial” Sabbaths only and excluding the “moral” Sabbath?
In referring to festivals that had been required by God’s Law to ancient Israel, the apostle Paul wrote:
Colossians 2:16-17 NASB
16 Therefore no one is to [a]act as your judge in regard to food or
drink or in respect to a festival or a new moon or a Sabbath [b]day—
17 things which are a mere shadow of what is to come; but the
substance belongs to Christ.
The Christians in Colossae were to let no one judge their standing before God on the basis of observance of festivals of the Mosaic Law. This includes not only "ceremonials" but also " moral" Sabbath.
Paul warns Christians, do not become partners with unbelievers
2 Corinthians 6:14-15 NET
Unequal Partners
14 Do not become partners with those who do not believe, for what
partnership is there between righteousness and lawlessness, or what
fellowship does light have with darkness? 15 And what agreement does
Christ have with Beliar? Or what does a believer share in common with
an unbeliever?
In other words, if Christians want to please God, they should not mix true worship with false. If you want to please God, Jesus said,21 “Not everyone who says to Me, ‘Lord, Lord,’ will enter the kingdom of heaven, but he who does the will of My Father who is in heaven will enter. (Mat 7:21 NASB)