Galatians 4:8

Howbeit then, when ye knew not God, ye did service unto them which by nature are no gods.

However at that time, not knowing God, you were in bondage to those who by nature are not gods.

Howbeit at that time, not knowing God, ye were in bondage to them that by nature are no gods:

But then, indeed, not having known God, ye were in servitude to those not by nature gods,

Formerly, when you did not know God, you were slaves to those who by nature are not gods.