en_tn_condensed/act/19/27.md

that our trade will be discredited

"that what Paul is saying will discredit our trade" or "that people will think that our trade is false"

our trade

This refers to their business of making and selling idols.

the temple of the great goddess Artemis might be regarded as worthless

"people will think that the temple of the great goddess Artemis is worthless" or "people will think there is no benefit in going to the temple to worship the great goddess Artemis"

her greatness would be brought to nothing

"People would no longer recognize how great she is" or "She will lose her reputation of being great"

whom all Asia and the world worship

"whom many people in Asia and in other parts of the world worship"