20. stand--waiting in wonderful condescension and long-suffering.
      knock-- (So 5:2). This is a further manifestation of His loving desire for the sinner's salvation. He who is Himself "the Door," and who bids us "knock" that it may be "opened unto" us, is first Himself to knock at the door of our hearts. If He did not knock first, we should never come to knock at His door. Compare So 5:4-6, which is plainly alluded to here; the Spirit thus in Revelation sealing the canonicity of that mystical book. The spiritual state of the bride there, between waking and sleeping, slow to open the door to her divine lover, answers to that of the lukewarm Laodicea here. "Love in regard to men emptied (humbled) God; for He does not remain in His place and call to Himself the servant whom He loved, but He comes down Himself to seek him, and He who is all-rich arrives at the lodging of the pauper, and with His own voice intimates His yearning love, and seeks a similar return, and withdraws not when disowned, and is not impatient at insult, and when persecuted still waits at the doors" [NICOLAUS CABASILAS in TRENCH].
      my voice--He appeals to the sinner not only with His hand (His providences) knocking, but with His voice (His word read or heard; or rather, His Spirit inwardly applying to man's spirit the lessons to be drawn from His providence and His word). If we refuse to answer to His knocking at our door now, He will refuse to hear our knocking at His door hereafter. In respect to His second coming also, He is even now at the door, and we know not how soon He may knock: therefore we should always be ready to open to Him immediately.
      if any man hear--for man is not compelled by irresistible force: Christ knocks, but does not break open the door, though the violent take heaven by the force of prayer (Mt 11:12): whosoever does hear, does so not of himself, but by the drawings of God's grace (Joh 6:44): repentance is Christ's gift (Ac 5:31). He draws, not drags. The Sun of righteousness, like the natural sun, the moment that the door is opened, pours in His light, which could not previously find an entrance. Compare HILARY on Psalm 118:19.
      I will come in to him--as I did to Zaccheus.
      sup with him, and he with me--Delightful reciprocity! Compare "dwelleth in me, and I in Him," Joh 6:56. Whereas, ordinarily, the admitted guest sups with the admitter, here the divine guest becomes Himself the host, for He is the bread of life, and the Giver of the marriage feast. Here again He alludes to the imagery of So 4:16, where the Bride invites Him to eat pleasant fruits, even as He had first prepared a feast for her, "His fruit was sweet to my taste." Compare the same interchange, Joh 21:9-13, the feast being made up of the viands that Jesus brought, and those which the disciples brought. The consummation of this blessed intercommunion shall be at the Marriage Supper of the Lamb, of which the Lord's Supper is the earnest and foretaste.

JFB.