And now (kai nun). John tenderly repeats the exhortation, “keep on abiding in him.”
If he shall be manifested (ean phanerōthēi). Condition of third class with ean and first aorist passive subjunctive as in 1Jo 2:19; Col 3:3. A clear reference to the second coming of Christ which may be at any time.
That we have boldness (hina schōmen parrēsian). Purpose clause with hina and the ingressive second aorist active subjunctive of echō, “that we may get boldness.”
And not be ashamed (kai mē aischunthōmen). Likewise negative purpose (after John’s fashion) with mē and the first aorist passive subjunctive of aischunō, to put to shame.
Before him (ap' autou). “From him,” as if shrinking away from Christ in guilty surprise. See 2Th 1:9 for this use of apo (from the face of the Lord).