'Blessing' in the Bible

The cup of blessing, which we bless, does it not mean a joint-participation in the blood of Christ? The loaf of bread which we break, does it not mean a joint-participation in the body of Christ?

I should be right glad were you all to speak in 'tongues,' but yet more glad were you all to prophesy. And, in fact, the man who prophesies is superior to him who speaks in 'tongues,' except when the latter can interpret in order that the Church may get a blessing.