Acts 19:26

And now you have seen and heard, not only here in Ephesus, but throughout almost all of [the province of] Asia, that this Paul has been convincing people, [even] to the point of turning many away [from idol worship]. [He is] saying that hand-made gods [like we make] are not real [gods at all].

Acts 19:35

When the town clerk had quieted down the crowd, he said, "You people of Ephesus, who among you does not know that the city of Ephesus is caretaker of the temple of the great Artemis and of her image, which fell down from the sky?

1 Corinthians 10:19-20

So, what am I saying? That an animal sacrificed to idols is [really] anything, or that an idol [itself] is anything?

Treasury of Scripture Knowledge

Summary

Their idols are silver and gold, the work of men's hands.

Bible References

Their idols

Acts 19:26
And now you have seen and heard, not only here in Ephesus, but throughout almost all of [the province of] Asia, that this Paul has been convincing people, [even] to the point of turning many away [from idol worship]. [He is] saying that hand-made gods [like we make] are not real [gods at all].
1 Corinthians 10:19
So, what am I saying? That an animal sacrificed to idols is [really] anything, or that an idol [itself] is anything?