Matthew 9:6

But that ye may know, etc. - External miracles are the proofs of internal ones. Three miracles are wrought in this case. (I mean, by miracle, something produced or known that no power is capable of but that which is omnipotent, and no knowledge adequate to but that which is omniscient). The miracles are these:

1st. The remission of the poor man's sins.

2d. The discernment of the secret thoughts of the scribes.

3d. The restoring of the paralytic, in an instant, to perfect soundness.

Thus one miracle becomes the proof and establishment of another. Never was a clearer proof of omnipotent energy and mercy brought under the senses of man. Here is an absolutely perfect miracle wrought; and here are absolute incontestable proofs that the miracle was wrought; and the conclusion is the fullest demonstration of the Divinity of the ever-blessed Jesus.

Arise, take up thy bed - Being enabled to obey this command was the public proof that the man was made whole. Such a circumstance should not pass without improvement. A man gives proof of his conversion from sin to God who imitates this paralytic person. He who does not rise and stand upright, but either continues grovelling on the earth, or falls back as soon as he is got up, is not yet cured of his spiritual palsy. When we see a penitent enabled to rejoice in hope of God's glory, and to walk in the way of his commandments, he affords us all the proof which we can reasonably require, that his conversion is real: the proof sufficient to satisfy himself is the witness of the Holy Spirit in his own heart; but this is a matter of which those who are without cannot judge: they must form their opinion from his conduct, and judge of the tree by its fruits.

But that ye may know ... - That you may have full proof on that point; that you may see that I have power to forgive sin, I will perform an act which all must perceive and admit to require the power of God.

Arise, take up thy bed, and go unto thine own house - The fact that the paralytic man could do this would prove that a miracle was performed. He was healed by a word; it was done instantaneously; it was done in the most public manner. The fact that a man, just before perfectly helpless, could now take up and carry his own bed or couch, proved that a divine "power" had been exerted; and that fact proved that he who had performed the miracle must also have the "power" and the "authority" to forgive sin. It is proper to add, in illustrating this, that in the East a "bed" is often nothing more than a bolster and a blanket spread on the floor. "The bed provided for me," says Professor Hackett ("Illustrations of Scripture," p. 112) "consisted merely of a bolster and a blanket spread on the floor. The latter could be drawn partially over the body if any one wished, though the expectation seemed to be that we should sleep in our ordinary dress, without any additional covering. Such a bed is obviously a portable one; it is easy to take it up, fold it together, and carry it from place to place, as convenience may require."

9:6 On earth - Even in my state of humiliation.