Matthew Henry on 2 Corinthians 12:1-6

There can be no doubt the apostle speaks of himself. Whether heavenly things were brought down to him, while his body was in a trance, as in the case of ancient prophets; or whether his soul was dislodged from the body for a time, and taken up into heaven, or whether he was taken up, body and soul together, he knew not. We are not capable, nor is it fit we should yet know, the particulars of that glorious place and state. He did not attempt to publish to the world what he had heard there, but he set forth the doctrine of Christ. On that foundation the church is built, and on that we must build our faith and hope. And while this teaches us to enlarge our expectations of the glory that shall be revealed, it should render us contented with the usual methods of learning the truth and will of God.