6. say—profess.
have fellowship with him—(1Jo 1:3). The essence of the Christian life.
walk—in inward and outward action, whithersoever we turn ourselves [Bengel].
in darkness—Greek, "in the darkness"; opposed to "the light" (compare 1Jo 2:8, 11).
lie—(1Jo 2:4).
do not—in practice, whatever we say.
the truth—(Eph 4:21; Joh 3:21).