Galatians 4:8

8.But when ye as yet knew not God. This is not intended as an additional argument; and indeed he had already proved his point so fully, that no doubt remained, and the rebuke which was now to be administered could not be evaded. His object is to make their fall appear more criminal, by comparing it with past events. It is not wonderful, he says, that formerly ye did service to them which by nature are no gods; for, wherever ignorance of God exists, there must be dreadful blindness. You were then wandering in darkness, but how disgraceful is it that in the midst of light you should fall into such gross errors! The main inference is, that the Galatians were less excusable for corrupting the gospel than they had formerly been for idolatry. But here it ought to be observed, that, till we have been enlightened in the true knowledge of one God, we always serve idols, whatever pretext we may throw over the false religion. The lawful worship of God, therefore, must be preceded by just views of his character. By nature, that is, in reality, they are no gods. Every object of worship which men contrive is a creature of their own imagination. In the opinion of men idols may be gods, but in reality they are nothing.