When God warned that we should not take the Holy Communion in an unworthy manner, it was not a joke. We should not take it carelessly as if we are taking ordinary bread and wine; you should approach it with a sense of sacredness. This is the emblem of the body and blood of Jesus; it is the meal of a living covenant with a living spirit, the spirit of the Almighty God. You must be in a spiritual position to qualify and you must condition your heart right to take it.
In Joshua chapter 9, after Joshua had entered into a covenant with the Gibeonites, he discovered that they were cursed, but there was nothing he could do about it anymore. They had cut the covenant. Joshua was angry because he had been deceived but he could not kill them because he had already made a covenant with them to protect them.
The other nations in the province heard about it and they came against the Gibeonites. All that the Gibeonites needed to do was to inform Joshua that they had been invaded by the enemy and that they needed him. Even if Joshua didn’t feel like fighting, he had to because of the covenant. Likewise, even if God doesn’t feel like answering you, when you break bread he comes under an obligation to respond. You may not have done too well, but the blood is perfect.