Commentaries:
Robertson's Word Pictures (NT)
I stand at the door (esthka epi thn quran). Perfect active of isthmi (intransitive). Picture of the Lord's advent as in Matthew 24:33; James 5:9, but true also of the individual response to Christ's call (Luke 12:36) as shown in Holman Hunt's great picture. Some see a use also of Song of Solomon 5:2.
If any man hear—and open (ean tiv akoush kai anoich). Condition of third class with ean and first aorist (ingressive) active subjunctive of akouw and anoigw. See John 10:3; John 18:37. See the picture reversed (Swete) in Luke 13:25; Matthew 25:10.
I will come in to him (eiseleusomai). Future middle of eiserxomai. See Mark 15:43; Acts 11:3 for eiserxomai prov, to go into a man's house. Cf. John 14:23.
Will sup (deipnhsw). Future active of deipnew, old verb, from deipnon (supper), as in Luke 17:8. Fellowship in the Messianic kingdom (Luke 22:30; Mark 14:25; Matthew 26:29). Purely metaphorical, as is plain from I Corinthians 6:13.
Other Robertson's Word Pictures (NT) entries containing Revelation 3:20:
Revelation 1:9
Revelation 3:8
Revelation 4:1
Revelation 7:1
Revelation 19:7
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