Opinion... yeah, well...
You see, attempting to speak to atheists/etc [which deny that God Created in the 6 Days and Rested the 7th day of Genesis 1-2, Exodus 20:8-11, etc], without speaking to them of that fact, as Paul did...
And saying, Sirs, why do ye these things? We also are men of like passions with you, and preach unto you that ye should turn from these vanities unto the living God, which made heaven, and earth, and the sea, and all things that are therein: Acts 14:15
...is unscriptural.
For you see, the Sabbath Commandment is right there... in Pauls appeal to return to the Creator [Gen 1-2, Exo 20:8-11 ["For in six days the LORD made heaven and earth, the sea, and all that in them is, and rested the seventh day: wherefore the LORD blessed the sabbath day, and hallowed it."], etc] which created them... even as Peter spoke to the Jews in reminder, Acts 4:24.
God winks at ignorance, and is long-suffering, but now calls all men [including you] to Repent [turn from Sin, which is transgression of the Law, and denial of the Creator] and obey Him:
Who in times past suffered all nations to walk in their own ways. Acts 14:16
And the times of this ignorance God winked at; but now commandeth all men every where to repent: Acts 17:30