Iconoclasm, [684] ff.
Ignatius of Antioch, [22], [30], [41] f.
Images, controversy on, [684] ff.
Incorruptibility, [136] ff.
India, Christianity in, [55].
Irenæus, on John, [26];
on Gnosticism, [78-81], [85] f., [92] f.;
on apostolic tradition and churches, [112-114];
on the gospels, [120];