if, &c. = we sinning. Greek. hamartano. App-128.
wilfully. Greek. hekousios. Only here and 1 Peter 5:2 (willingly). The adjective only in Philemon 1:14. The sin here is the deliberate turning back to Judaism. Compare Hebrews 6:4-6.
that we have. having.
knowledge. Greek. epignosis. App-132.
remaineth. See Hebrews 4:6.
no more. no longer. Greek. ouketi.