But then, when you knew not God, you did service unto them which by nature are no gods.
All Commentaries on Galatians 4:8 Go To Galatians 4
Tertullian of Carthage
AD 220
For the Jews say, that from the beginning God sanctified the seventh day, by resting on it from all His works which He made; and that thence it was, likewise, that Moses said to the People: "Remember the day of the sabbaths, to sanctify it: every servile work ye shall not do therein, except what pertaineth unto life.".
He did not therefore seek, by any depreciation of the mundane elements, to turn them away from their god, although, when he said just before, "Howbeit, then, ye serve them which by nature are no gods"