1 Corinthians  10 : 21 Ye cannot drink the cup of the Lord, and the cup of devils: ye cannot be partakers of the Lord’s table, and of the table of devils. 22 Do we provoke the Lord to jealousy? are we stronger than he?

Paul is telling the people here these two things are not compatible. He is letting them know they can not be on both sides of the fence, it has got to be one or the other. They cannot no longer worship the idols they were worshiping if they are a partaker of the cup of Lord. The Lord is the light of the and darkness cannot share space with the light.  God is a jealous God and he tolerates no competition but rather punishes it. The first of the commandments is “Thou shalt have no other gods before me.” We must be very careful not to even think, or speak of another god. We should know also no that no one is stronger than God because we know Satan thought he could be more powerful than God but we know how that turned out.