{No one hath beheld God at any time} (	heon oudeis p(9370)ote
tethe(8374)ai). Perfect middle indicative of 	heaomai ( Joh
1:14 ). Almost the very words of  Joh 1:18  	heon oudeis p(9370)ote
he(9372)aken (instead of 	ethe(8374)ai). {If we love one another}
(ean agap(936d)en all(886c)ous). Third-class condition with ean and
the present active subjunctive, "if we keep on loving one
another." {God abideth in us} (ho theos en h(886d)in menei). Else
we cannot go on loving one another. {His love} (h(8820)agap(880a)autou). More than merely subjective or objective ( 2:5  4:9 ).
"Mutual love is a sign of the indwelling of God in men" (Brooke).
{Is perfected} (	etelei(936d)en(8820)estin). Periphrastic (see usual
form 	etelei(9374)ai in  2:5  4:17 ) perfect passive indicative of
	eleio(935c) (cf.  1:4 ). See verse  18  for "perfect love."