Where is the first instance of the cup and the broken bread being practiced?
The first instance of the cup and the broken bread being practiced is the Lord's upper room experience. Paul later refers to this in 1 Corinthians 10:16-17 as the communion of the blood of Christ and the communion of the body of Christ.
Les explains that in 1 Corinthians 10:16-17, Paul shifts gears from discussing resisting temptations and fleeing idolatry to the Lord's communion table. Paul asks about the cup of blessing which we bless and the bread which we break, identifying them as the communion of the blood and body of Christ. Les then asks where the first instance of presenting the cup and practicing the wine and broken bread occurred, answering that it was the Lord's upper room experience.