If God so loved us (ei outw o qeo hgaphsen hma). Condition of first class with ei and the first aorist active indicative. As in John 3:16 , so here outw emphasises the manifestation of God's love both in its manner and in its extent ( Romans 8:32 ). Ought (opeilomen). As in 1 John 2:6 . Noblesse oblige. "Keep on loving," (agapain) as in 1 John 3:11 .