Jesus Christ maketh thee whole. It is certain that the apostles would never have attempted the doing of miracles, unless they had been first certified of the will of God, whereupon the effect did depend. For they had no such power of the Spirit given them that they could heal whatsoever sick persons they would; but as Christ himself used a measure in his miracles, so he would have his apostles to work no more than he knew were profitable. Therefore Peter did not rashly break out into these words; because he might have set himself to be laughed at, unless he had already known the will of God. It may be that he prayed apart. The Spirit who was the author of all miracles, and which wrought by the hand of Peter, did even then direct his tongue, and did move his heart by a secret inspiration. And in these words Peter showeth plainly that he is only the minister of the miracle, and that it proceedeth from the power of Christ; that he may by this means extol the name of Christ alone. Make thy bed. These circumstances do amplify the glory of the miracle, in that he doth not only recover strength to rise, but is also able to make his own bed, who could move no member before. To the same end tendeth the continuance of the disease; for a palsy of eight years' continuance is not easily cured. In like sort is he said to have laid in his bed, that we may know that all his members were lame; for it was a little bed wherein they were wont to rest at noon. Whereas AEneas was so ready to make trial of his members, he thereby declared the obedience of his faith. For although he perceived the strength which was given him, [1] yet he was most of all moved with the efficacy of the words, to rise.

Footnotes

1 - "Redditum sibi vigorem," that his vigor was restored.

Maketh thee whole - Cures thee. Peter claimed no power to do it himself. Compare Acts 3:6, Acts 3:16; Acts 4:10.
Make thy bed - This would show that he was truly healed. Compare Matthew 9:6; Mark 2:9, Mark 2:11; John 5:11-12.

Jesus Christ maketh thee whole - Not Peter, for he had no power but what was given him from above. And, as an instrument, any man could heal with this power as well as Peter; but God chose to put honor upon those primitive preachers of his word, that men might see that they were commissioned from heaven.
Arise, and make thy bed - Give now full proof that Jesus Christ Has made thee whole, by arising, and by making thy bed. He was at home, and therefore was not commanded, as the paralytic person, to take up his bed; but he was ordered to make it - strew it afresh, that all might see that the cure was perfect.

And Peter said unto him, Aeneas, &c. He called him by his name, which he might without divine revelation know, though he was a stranger to him, by the people of the house, where he was:
Jesus Christ maketh thee whole; Peter knew, by some secret impulse upon his mind, that Christ would cure this man by him as an instrument at this time, and therefore said these words; not as a prayer, as some render them, "may Jesus Christ heal thee", though was it so, it was a prayer of faith; but as a promise that he would, or rather as a declaration of the then present exertion of his power to heal him; which he ascribes not to himself, but to Christ, in whose name, and by whose power the apostles wrought all their miracles; Acts 3:12 "arise, and make thy bed"; which would be a full demonstration that he was perfectly whole:
and he arose immediately; and also, no doubt, made his bed, as the man at Bethesda's pool was bid by Christ, to take up his bed and carry it, as a proof of his soundness.

And Peter said unto him, Eneas, Jesus Christ maketh thee whole--(See on Acts 3:6).
make thy bed--(See on John 5:8).