30 If I take part in the meal with thankfulness, why am I denounced because of something I thank God for?

Read 1 Corinthians 10:30 Using Other Translations

For if I by grace be a partaker, why am I evil spoken of for that for which I give thanks?
If I partake with thankfulness, why am I denounced because of that for which I give thanks?
If I can thank God for the food and enjoy it, why should I be condemned for eating it?