For where two or three are gathered together in my name, there am I in the midst of them.
All Commentaries on Matthew 18:20 Go To Matthew 18
Jerome
AD 420
Because He had said, “If he will not hear the Church, let him be to thee as a heathen, and a publican,” whereupon the brother so contemned might answer, or think within himself, If you despise me, I also will despise you; if you condemn me, you shall be condemned by my sentence. He therefore confers powers upon the Apostles, that they may be assured that when any are condemned after this manner, the sentence of man is ratified by the sentence of God. “Verily Isay unto you, Whatsoever ye shall bind on earth shall be bound in heaven; and whatsoever ye shall loose upon the earth shall be loosed in heaven.”
Or otherwise; All His foregoing discourse had invited us to union; now to make us embrace peace more anxiously, He holds out a reward, promising to be in the midst of two or three.
We may also understand this spiritually; where our spirit, soul, and body are in agreement, and have not within them conflicting wills, they shall obtain from My Father every thing they shall ask; for none can doubt that that demand is good, where the body wills the same thing as the spirit.