Something I haven’t heard pointed out before from the pulpit about the food offered to idols in 1 Corinthians 10:19–20.
Paul is not implying that food offered to idols is anything special, or that idols are anything special (10:19). The thing in itself is not anything, but it may well have spiritual significance. What you have to beware of is the spiritual significance of those things because of the powers behind them.
Paul is implying that demons are behind the idols and thus that by partaking in the offerings of the altar, they are partaking in demons (10:20). When you do the same things that the pagans do, you open yourselves up to the influence of those demonic powers which are behind those practices.