‏ 1 John 4:20

 If a man say ( εαν τις ειπη ). Condition of third class with  εαν and second aorist active subjunctive. Suppose one say. Cf. 1:6.

 I love God ( Αγαπω τον θεον ). Quoting an imaginary disputant as in 2:4.

 And hateth ( κα μισε ). Continuation of the same condition with  εαν and the present active subjunctive, "and keep on hating." See 2:9; 3:15 for use of  μισεω (hate) with  αδελφος (brother). A liar ( ψευστης ). Blunt and to the point as in 1:10; 2:4.

 That loveth not ( ο μη αγαπων ). "The one who does not keep on loving" (present active negative articular participle).

 Hath seen ( εωρακεν ). Perfect active indicative of  οραω, the form in Joh 1:18 used of seeing God.

 Cannot love ( ου δυνατα αγαπαιν ). "Is not able to go on loving," with which compare 2:9,  ου δυνατα αμαρτανειν (is not able to go on sinning). The best MSS. do not have  πως (how) here.

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