How did Paul receive the teaching about the Lord's Supper?
Paul received the teaching about the Lord's Supper by revelation from the Lord Jesus Himself, not from human instruction or tradition. He received of the Lord by revelation, as the text says. The Lord revealed it to him, and he then delivered it to the Corinthians as he had received it.
Les explains that Paul received this teaching by direct revelation from the Lord Jesus, not through human instruction. Paul wrote 1 Corinthians after the Corinthian church had been operating long enough to build excesses and kooky ideas, no longer practicing the Lord's Supper as he first taught. They had turned it into a real supper, bringing food and wine, which led to excesses. So Paul corrected them by recounting what the Lord revealed to him: on the night He was betrayed, Jesus took bread, gave thanks, broke it, and said, 'Take, eat; this is My body, which is broken for you; this do ye.'
For I have received of the Lord that which also I delivered unto you, That the Lord Jesus the same night in which he was betrayed took bread:
More Questions
Where did Paul get the Lord's Supper account if the Gospels weren't written yet?
Paul could not go back to Matthew or the other Gospel writers and cite them as his source, because his account of the Lord's Supper came by revelation.
How long had the Corinthian church been operating when Paul wrote 1 Corinthians and corrected their Lord's Supper?
By the time Paul wrote 1 Corinthians, the Corinthian church had been operating long enough to develop the excesses in their practice of the Lord's Supper.
Was the Corinthians' practice of the Lord's Supper the same as what Paul originally taught them?
The Corinthians' current practice of the Lord's Supper was not what Paul taught them at the beginning.