1 Corinthians 8:4

2 The one who thinks he knows something does not yet know as he ought to know.

3 But the one who loves God is known by God.

So about eating food sacrificed to idols: We know that an idol is nothing at all in the world, and that there is no God but one.

5 For even if there are so-called gods, whether in heaven or on earth (as there are many so-called gods and lords),

6 yet for us there is but one God, the Father, from whom all things came and for whom we exist. And there is but one Lord, Jesus Christ, through whom all things came and through whom we exist.

This was said to Israel at a particular time, so it is wise to read it together with the surrounding text. Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB
So about eating food sacrificed to idols: We know that an idol is nothing at all in the world, and that there is no God but one.
KJV
As concerning therefore the eating of those things that are offered in sacrifice unto idols, we know that an idol is nothing in the world, and that there is none other God but one.
WEB
Therefore concerning the eating of things sacrificed to idols, we know that no idol is anything in the world, and that there is no other God but one.
ASV
Concerning therefore the eating of things sacrificed to idols, we know that no idol is [anything] in the world, and that there is no God but one.
DARBY
concerning then the eating of things sacrificed to idols, we know that an idol [is] nothing in [the] world, and that there [is] no other God save one.
BLB
Therefore concerning the eating of the [things] sacrificed to idols, we know that an idol [is] nothing in the world and that [there is] no God except one.
ÅB
Hva nå det vedkommer å spise av avguds-offerne, da vet vi at ingen avgud i verden er til, og at det er ingen Gud uten én.
OTB
Derfor, når det gjelder å spise mat ofret til avguder, forstår vi at en avgud er uten betydning i verden, og at det er ingen Gud utenom én.
B1930
Hvad nu det vedkommer å ete av avguds-offerne, da vet vi at ingen avgud i verden er til, og at det er ingen Gud uten én.

Study notes (Tyndale)

Original text and word study

Cross references